Carl Jung Explained: The Shadow, Jungian Archetypes, the Collective Unconscious and Why TikTok Shadow Work Misses the Point

Last updated: November 4, 2026

Carl Gustav Jung (1875 to 1961) was a Swiss psychiatrist who founded analytical psychology after breaking with Sigmund Freud. He argued that beneath our personal memories lies a collective unconscious shared by all humans, organised by inherited patterns he called archetypes: the persona, the shadow, the anima and animus, and the self. The shadow is the part of ourselves we would rather not see. “Shadow work”, the modern self-help label, means becoming aware of those rejected traits instead of projecting them onto other people. For Jung this was one step in individuation, the lifelong process of becoming a whole person, and not a weekend journaling exercise.

The meme above taps into exactly that tension between the polished face we show the world and the less flattering material behind it. Like most good psychology jokes, it lands because everyone recognises the gap, even people who have never opened a book by the man who gave it a name.

Who Was Carl Jung? From a Swiss Parsonage to the Burghölzli Clinic

Carl Jung was born on 26 July 1875 in Kesswil, on Lake Constance, and died on 6 June 1961 in Küsnacht near Zurich, according to Britannica, which describes him as the Swiss psychiatrist who “founded analytic psychology” and developed the ideas of the introverted and extraverted personality, the archetypes and the collective unconscious.

He grew up as the son of a Swiss Reformed pastor, studied medicine at the University of Basel and chose psychiatry, then a fairly unglamorous corner of medicine, where questions about the soul could still be asked with the tools of a natural scientist. In December 1900, as Wikipedia’s biography records, he moved to Zurich and started as a junior doctor at the Burghölzli, the university psychiatric hospital run by Eugen Bleuler, the man who would coin the word “schizophrenia”.

The Burghölzli made his reputation. Working with Bleuler, the young doctor helped develop the word association experiment: a patient hears a list of words and answers each with the first word that comes to mind, while the examiner times the response. Hesitations, odd answers and blushes tended to cluster around certain topics. The Encyclopedia of World Biography notes that he called these emotionally charged clusters of ideas “complexes”, a word that has since migrated from the clinic into everyday speech. When someone says you have “a complex about money”, they are, knowingly or not, quoting a Swiss psychiatrist of 1904.

This is also the period in which psychiatry was asking who counts as mad and why, a question Michel Foucault would later turn into a history of exclusion; our post on Foucault’s Madness and Civilization and the stigma of mental illness tells that darker side of the asylum story.

Jung and Freud: The Chosen Heir Who Walked Away

The friendship between the two founders of depth psychology began with a thirteen hour conversation in 1907 and ended in bitterness in 1913, and the break shaped both men’s work for the rest of their lives.

The younger man had sent Freud his Studies in Word Association, and the older man was delighted to find a respected, non Jewish psychiatrist from a prestigious clinic who supported psychoanalysis. They met in Vienna on 3 March 1907, and, according to Wikipedia, the conversation was later recalled as “interminable and unceasing for 13 hours.” Their correspondence, collected as The Freud/Jung Letters by Princeton University Press, runs to “some 360” letters, and the publisher describes the Swiss psychiatrist as Freud’s “chosen heir”. In 1909 they sailed to America together. The American Psychological Association’s Monitor recounts that at Clark University in Worcester, Massachusetts, “Jung offered three lectures, all on his work with the word-association method,” and both men received honorary doctorates.

The cracks were theoretical before they were personal. Freud saw the libido as essentially sexual energy; his heir came to see it as psychic energy in general, which could express itself in religion, myth and art as much as in sex. He laid out his alternative in the book published in English as Psychology of the Unconscious (1912; German title Wandlungen und Symbole der Libido), later revised as Symbols of Transformation. Freud read it as a betrayal. In early January 1913 he proposed, in a letter quoted by Wikipedia, that “we abandon our private relationship entirely.” Looking back, the author of the book said simply that its publication “cost me my friendship with Freud.”

If you want the other side of the story, including the Oedipus complex that his former disciple refused to accept as the master key to the psyche, our new guide to Freudian slips and the Oedipus complex explains Freud’s model of the mind, and Sigmund Freud and the “your mom” joke shows how that model ended up as a meme.

The Red Book: Carl Jung’s Confrontation with the Unconscious

After the break, the Swiss psychiatrist went through what he later called his “confrontation with the unconscious”, a period of intense visions and fantasies that he recorded in an illuminated manuscript now known as the Red Book, or Liber Novus.

The Philemon Foundation, which prepared the edition, dates that confrontation to the years 1912 to 1918 and notes that he worked on the book for sixteen years. He deliberately provoked fantasies, wrote down the dialogues with figures who appeared in them, among them an old sage he named Philemon, and copied the results in calligraphy into a large red leather folio, illustrated with paintings that look like a cross between medieval manuscripts and Symbolist art. According to Wikipedia’s article on the Red Book, he began the folio around 1914 and abandoned the transcription in 1930 with only about two thirds of the text copied in. After his death his heirs kept it as a private legacy, refused scholars access, and stored it in a Zurich bank vault.

It finally appeared on 7 October 2009, published by W. W. Norton, edited and introduced by the historian Sonu Shamdasani, who translated it with Mark Kyburz and John Peck. Was this a breakdown, a spiritual crisis or a deliberate experiment? Probably all three. What matters for the history of ideas is that the man himself saw it as the source of everything that followed. In a 1957 interview with Aniela Jaffé, quoted in the same article, he said: “The years … when I pursued the inner images, were the most important time of my life.” The collective unconscious, the archetypes and the method he called active imagination all grew out of those notebooks.

The Collective Unconscious and Jungian Archetypes Explained

The collective unconscious is the layer of the psyche that, in this theory, is not acquired through personal experience but inherited, and the archetypes are the recurring patterns within it that shape how humans imagine mothers, heroes, tricksters, enemies and gods.

Freud’s unconscious was personal: a storeroom of repressed wishes and forgotten experiences. His rival kept that layer but added another beneath it. In R. F. C. Hull’s translation of The Archetypes and the Collective Unconscious, quoted on carl-jung.net, the personal unconscious “rests upon a deeper layer, which does not derive from personal experience and is not a new acquisition but is inborn. This deeper layer I call the collective unconscious.” It is, he continues, “identical in all men and thus constitutes a common psychic substrate of a suprapersonal nature.” The Encyclopedia of World Biography calls the archetypes the “dominants of the collective unconscious”.

An archetype is not an image you inherit, like a picture stored in your genes. It is closer to a tendency to form certain images, which then gets filled in with local material: the wise old man looks like a druid in one culture and a kung fu master in another. He was aware of the philosophical pedigree. As the Wikipedia entry on archetypes notes, citing the analyst Jean Knox, he described “the term archetype” as “an explanatory paraphrase of the Platonic eidos”. Plato’s Forms, though, are eternal objects of reason outside the mind, while these archetypes are psychological structures inside it, a difference our post on Plato’s theory of Forms helps to make clear. The four most famous ones are easy to recognise once you know them.

The persona deserves a word of its own, because the name is borrowed from the masks of Roman theatre. In a line quoted by the Pacifica Graduate Institute library guide, “the persona is that which in reality one is not”. That does not make it fake. We need masks to function in society; the danger lies in fusing with one, like the manager who cannot stop managing at home. Our Halloween essay on masks, identity and the masquerade of the self picks up the same theme, and Sartre’s very different take on authenticity is in Sartre and the true self. Behind the four figures stands individuation, the process of integrating them into a whole. The Encyclopedia of World Biography sums it up as “becoming what you are”, a phrase with a long philosophical history of its own.

Shadow Work: What Jung Meant by Making the Darkness Conscious

Shadow work, in the original sense, means recognising and integrating the parts of yourself you have rejected, and it is less about self-improvement than about moral honesty.

The definitions collected by the Pacifica Graduate Institute are blunt. The shadow is “the thing a person has no wish to be” (Collected Works, volume 16, §470). “Everyone carries a shadow,” he wrote in Psychology and Religion, “and the less it is embodied in the individual’s conscious life, the blacker and denser it is” (CW 11, §131). And in Aion: “The shadow is a moral problem that challenges the whole ego-personality” (CW 9ii, §14). The point is not that the shadow is evil. It contains whatever did not fit the self-image, which can include anger and envy but also talents, ambition or tenderness that a family or culture discouraged. The trouble begins when it stays unconscious. Then it gets projected: we see in our neighbour, our ex or the other political party precisely the qualities we cannot admit in ourselves.

The most famous line on the subject is genuine. In the essay “The Philosophical Tree”, collected in Alchemical Studies (CW 13, §335), he wrote, in a passage quoted by the Jungian Center for the Spiritual Sciences: “One does not become enlightened by imagining figures of light, but by making the darkness conscious.” The next sentence is usually left off the posters, and it is the better one: “The latter procedure, however, is disagreeable and therefore not popular.”

Many other quotes circulating under his name are not so solid. “Until you make the unconscious conscious, it will direct your life and you will call it fate” has no known source in his writings; a Jungian quotation archive traces it to a passage in Aion (CW 9ii, §126), which reads more drily: “The psychological rule says that when an inner situation is not made conscious, it happens outside, as fate.” The same archive notes that “Thinking is difficult, that’s why most people judge” is an alteration of “Thinking is difficult, therefore let the herd pronounce judgment!” (CW 10, §652). “One day in retrospect the years of struggle will strike you as the most beautiful” is sometimes credited to him, but Quote Investigator shows it comes from a letter Freud sent him on 19 September 1907. And “Show me a sane man and I will cure him for you” is a borderline case: Quote Investigator concludes he probably said it, but the evidence is second hand, resting on his long time assistant Jolande Jacobi, as reported by the biographer Vincent Brome.

Which brings us to TikTok. By 2023, “shadow work” had become a booming self-help genre, with prompt journals, worksheets and videos promising to heal your inner child in thirty days. Business Insider reported in October 2023 that The Shadow Work Journal was “currently one of the bestselling books on Amazon,” and quoted the psychotherapist Connie Zweig, a long time writer on the shadow, warning that “there’s some risk in really exploring the unconscious.” The trend is not worthless; writing down what irritates you about other people is a decent start. But it differs from the original in three ways. The analytical version happened in a long relationship with a trained analyst, often over years; it worked through dreams and spontaneous images rather than fixed prompts; and its aim was not to feel better quickly but to take responsibility for one’s projections, which is often unpleasant. His own warning that the process is “disagreeable” is a useful filter: if your shadow work feels like a spa day, it may be persona work. For how philosophy itself has been used in therapy rooms, see our post on philosophical applications in psychotherapy.

From Psychological Types to MBTI: Introverts, Extraverts and a Test Carl Jung Never Wrote

The words “introvert” and “extravert” come from Jung’s Psychological Types (1921), but the Myers-Briggs Type Indicator was created later by two American women, and its scientific standing is much weaker than its popularity suggests.

In Psychological Types, which Wikipedia calls “one of his most influential books”, he described two basic attitudes, introversion (energy turned inward, towards the subject) and extraversion (energy turned outward, towards objects and people), combined with four psychological functions: thinking, feeling, sensation and intuition. He meant these as tendencies, and he warned against using them to stick labels on people. The book was, as the Myers & Briggs Foundation notes, “translated into English in 1923.” Katharine Cook Briggs, who had already been developing her own system of personality, adopted the theory, and her daughter Isabel Briggs Myers “created the original MBTI assessment and theory in the 1950s and 60s.” The Swiss psychiatrist himself had no part in building the questionnaire.

The MBTI turned the typology into sixteen four letter boxes, which is part of its charm and part of its problem. Psychologists Randy Stein and Alexander Swan, in a 2019 review in Social and Personality Psychology Compass, write that the MBTI “has existed in a parallel universe to social and personality psychology,” and conclude that its theory “lacks agreement with known facts and data, lacks testability, and possesses internal contradictions.” The central difficulty is that most traits are distributed continuously, with most people in the middle, while the MBTI sorts everyone into either one pole or the other. Many research psychologists prefer trait models such as the Big Five, which measure degrees rather than types. None of that stops people from enjoying an ENFP meme, and it should not; just treat the letters as a conversation starter, not a diagnosis.

Synchronicity, Pauli and the Problem of Proof: Is Jungian Psychology Science?

Jungian psychology contains clinically useful ideas but many claims, from archetypes to synchronicity, that are hard or impossible to test, which is why mainstream academic psychology has largely left it to therapists, literary critics and religious studies.

Synchronicity is the boldest of them: the idea that two events can be connected by meaning rather than by cause. His full account, “Synchronicity: An Acausal Connecting Principle”, appeared in German in 1952 in a volume he shared with the Nobel Prize winning physicist Wolfgang Pauli, published in English as The Interpretation of Nature and the Psyche, as Encyclopedia.com’s entry on synchronicity explains. The classic illustration is the scarab. A young patient was telling him a dream about a golden scarab when a beetle of the same family tapped against the window; he caught it and handed it to her, and the shock, he said, broke through her overly rational defences. The same entry notes that the concept has since been “widely borrowed by occultists” in support of their worldview, which is not where a theory hoping for scientific respectability wants to end up.

The philosophical objection is Karl Popper’s. Popper did not single out the Swiss school; his targets were Freud and Adler. But his complaint carries over. He found that their theories “appeared to be able to explain practically everything,” and added: “I could not think of any human behaviour which could not be interpreted in terms of either theory,” as he wrote in Science: Conjectures and Refutations. For Popper, that apparent strength was a weakness, since “the criterion of the scientific status of a theory is its falsifiability, or refutability, or testability.” A theory of archetypes that can absorb any dream, and a theory of synchronicity in which every coincidence might be meaningful, face the same problem.

The therapy is another matter, and here the evidence is mixed rather than absent. A 2013 review by Christian Roesler in Behavioral Sciences collected outcome studies, mostly from Germany and Switzerland, and reported improvements in symptoms and functioning that “remain stable after completion of therapy over a period of up to six years.” Roesler calls the method empirically effective, but the studies he reviews are naturalistic and retrospective, without randomised controlled trials, and some lack control groups. In short, long talk therapy in the analytical tradition seems to help many patients; whether it helps because of the theory of archetypes, or because of the general factors shared by good psychotherapies, is still an open question.

Carl Jung and the Nazis: The 1933 to 1934 Controversy

The darkest chapter in his biography is his conduct in 1933 and 1934, when he led a psychotherapy society that was being brought into line with the Nazi state and wrote about “Aryan” and “Jewish” psychology in terms that his own supporters still find hard to defend.

The facts, as set out by the Jungian analyst Aryeh Maidenbaum in Jewish Currents, are these. In 1933 he accepted the presidency of the General Medical Society for Psychotherapy (Allgemeine Ärztliche Gesellschaft für Psychotherapie), whose German branch was headed by Matthias Göring, a cousin of Hermann Göring. A December 1933 editorial praising Nazi ideology appeared in the society’s journal, the Zentralblatt für Psychotherapie; he and his colleague C. A. Meier later said Matthias Göring inserted it without their permission. In 1934 he himself published an article claiming that “the ‘Aryan’ unconscious has a higher potential than the Jewish.” In his defence, he reorganised the society as an international body so that Jewish doctors expelled from the German section could join as individual members, and he said he had taken the post to help his German Jewish colleagues. Later he privately admitted to Rabbi Leo Baeck that he had “slipped up”.

Maidenbaum’s verdict is a fair place to land. He notes that many Jewish Jungians did not consider him personally antisemitic, but argues that he did a “huge disservice” to himself and his school by never addressing the matter publicly, and that “criticism of him in this context is deserved.” A theory of collective psychology that sorts peoples by their unconscious was always vulnerable to political abuse, and the man who wrote so much about the shadow did not fully confront his own.

Jung’s Philosophers and Jungian Pop Culture: Kant, Nietzsche, Persona and the Duality of Man

Analytical psychology borrowed heavily from German philosophy, and in turn it has fed a surprising amount of modern pop culture, from video games to Star Wars.

The British Psychotherapy Foundation points out that Kant’s epistemology, and especially the unknowable “thing-in-itself”, is visible in the theory of archetypes: we never meet the archetype as such, only the images it produces, just as for Kant we never meet things as they are in themselves (see our explainer on Kant’s thing-in-itself). The same source credits Schopenhauer’s Will and Nietzsche’s overman with shaping his ideas of the unconscious and the self. Schopenhauer’s blind, striving Will is a close ancestor of an unconscious that drives us without asking permission; our comparison of Buddha and Schopenhauer on suffering shows where that pessimism came from. Nietzsche fascinated him from his student days in Basel. Between 1934 and 1939 he gave a private seminar on Thus Spoke Zarathustra, published by Princeton University Press in 1988 as Nietzsche’s Zarathustra in two volumes edited by James L. Jarrett, in which he read the book as a document of both genius and “neurotic and prepsychotic tendencies”. For Nietzsche’s own case, read our post on Nietzsche’s overman and Beyond Good and Evil; for the wider question of whether there is a fixed human nature for archetypes to belong to, see human nature versus social constructs.

Pop culture took the archetypes and ran. The Japanese role playing series Persona is built on them almost openly: as Inverse explained in a 2016 interview with the Winthrop University literature professor Matthew Fike, the games treat shadows as “the parts of ourselves that we deny or refuse to acknowledge”, and in Persona 3 the collective unconscious appears as the tower Tartarus and the Dark Hour. Hollywood got its dose through Joseph Campbell, whose The Hero with a Thousand Faces (1949) drew, according to Wikipedia’s biography of Campbell, “in particular on the work of Jung”; George Lucas was the first filmmaker to credit Campbell’s influence on Star Wars. And then there is Stanley Kubrick’s Full Metal Jacket (1987), in which Private Joker wears a peace badge next to “Born to Kill” on his helmet. Asked by an officer to explain, he says, in the line quoted by the writer David Louis Edelman: “I think I was trying to suggest something about the duality of man… The Jungian thing, sir.” It is probably the most famous reference to analytical psychology in film, and also a fair summary: the persona with the peace sign, the shadow underneath.

That duality is why the old Swiss doctor still sells mugs. If you want to carry the reminder around, our Forever Carl Gustav Jung T-shirt and Forever Carl Gustav Jung mug make a decent persona for a seminar room. Just remember that the real shadow work, by his own account, is the disagreeable part.