How to Cast the I Ching: A Psychological Guide to the Ancient Oracle

In 1949, Carl Jung wrote the foreword to Richard Wilhelm's translation of the I Ching — and in doing so, he planted a radical idea in the Western psyche: that the Book of Changes is not superstition, but a sophisticated method for dialoguing with the unconscious.

"Whoever invented the I Ching," Jung wrote, "was convinced that the hexagram worked out in a given moment coincided with the latter in quality no less than in time." This is not fortune-telling. This is synchronicity — an acausal connecting principle wherein inner psychological states and outer events converge in a moment of meaningful coincidence.

If you've ever felt that the I Ching speaks to you with uncanny precision, you've touched this principle. But knowing how to cast the I Ching — and even more importantly, why you're doing it — transforms the practice from a parlor trick into a profound tool for individuation.

What the I Ching Really Is (And Isn't)

The I Ching is not a fortune-telling device. It will not predict whether you will get the job or whether tomorrow brings good luck. To use it that way drains its deepest power.

The I Ching is a symbolic mirror. Its 64 hexagrams form an archetypal map of the psyche — the 64 fundamental situations the soul encounters on its journey toward wholeness. When you cast, you are not asking the universe to reveal a fixed future. You are asking: What pattern of the unconscious is seeking my attention right now?

What You Need to Cast the I Ching

The traditional method uses 50 yarrow stalks — a process that can take 20–30 minutes and is itself a meditative ritual. But the more accessible method, and the one most commonly used today, employs three coins.

You will need:

Three identical coins (any denomination). Chinese coins with a square hole and round edges are traditional — the round shape symbolizes heaven, the square hole symbolizes earth. But any coins will do.

A quiet space where you will not be interrupted for 15–20 minutes.

A journal to record your results, the question you asked, and the insights that arise.

Most importantly, you need the right inner stance: an attitude of sincere self-inquiry, not of desperate prediction. If you approach the I Ching with humility and genuine curiosity, it will meet you there.

The Psychological Preparation

Before you throw a single coin, pause. This is the most critical step — and the one most guides gloss over.

Jung described the I Ching as a method for accessing the "collective unconscious" — the deep stratum of psyche we all share, populated by archetypes that have shaped human storytelling since the beginning of consciousness. The hexagrams are these archetypes made visible.

To prepare psychologically:

1. Clarify your question. A vague question ("What will happen?") yields a vague response. A sharp question ("What pattern is blocking my ability to trust?") invites genuine insight. The I Ching responds best to your inner state, not external outcomes.

2. Hold the question lightly. You are not interrogating an oracle. You are opening a conversation.

3. Center yourself. Breathe. Feel your feet on the ground. Acknowledge that you are about to engage in a symbolic act — a ritual that bypasses your rational mind and speaks to the deeper self.

Step-by-Step: How to Cast the I Ching with Coins

With your question clear and your mind centered, you can begin.

Step 1: Formulate the Question Silently

Hold the three coins in cupped hands. Close your eyes. Repeat your question silently three times. If your mind wanders to desired outcomes, gently return to the question itself.

Step 2: Toss the Coins

Shake the coins gently, then toss them onto a flat surface. Let them fall naturally.

Each coin has two sides. Decide beforehand which is yin (tails, valued at 2) and which is yang (heads, valued at 3). The total determines the line:

Three heads (3+3+3=9): Moving Yang — a solid yang line that will change. The most significant type, signaling dynamic energy.

Two heads, one tail (3+3+2=8): Static Yin — a broken line.

One head, two tails (3+2+2=7): Static Yang — a solid line.

Three tails (2+2+2=6): Moving Yin — a broken line that will change, signaling transformation.

Write down the result. This is your first line — the bottom line of the hexagram.

Step 3: Repeat Five More Times

You need six tosses to build a complete hexagram. Each successive toss becomes the next line upward (line 1 at the bottom, line 6 at the top). Do not pause between tosses to analyze — simply record and continue. The interpretation comes after all six lines are cast.

Step 4: Identify Your Hexagram

Once you have six lines, look up the hexagram number in an I Ching reference or online. The hexagram is read from bottom to top. The bottom three lines form the lower trigram; the top three form the upper trigram.

For example:

Lower trigram ☵ (Water/Kan) + Upper trigram ☲ (Fire/Li) = Hexagram 63, After Completion (既济).

Step 5: Note the Moving Lines

If you have any moving lines (9 or 6), circle them. These are the lines that contain the most potent psychological energy for you right now. They indicate where transformation is already underway in your psyche — where the old pattern is dissolving and a new one is emerging.

A hexagram with moving lines yields a second hexagram, created by changing the moving lines to their opposites (yang becomes yin, yin becomes yang). This second hexagram represents the emerging situation — the direction your psyche is moving toward.

How to Read the I Ching Psychologically

This is where the Jungian approach diverges sharply from a superstitious one.

Do not read the hexagram text as literal prediction. Instead, read it as archetypal poetry. When the hexagram speaks of "The Creative" or "Darkness of the Night," it is not describing weather or events. It is describing an archetypal energy field you are currently inhabiting.

Ask yourself:

What aspect of this hexagram matches my inner experience right now?

Where in my life am I embodying the lower trigram's energy? The upper trigram's?

The moving lines — what is trying to change in me? What resistance am I feeling?

Jung wrote that the I Ching "does not offer itself with proofs and results; it does not vaunt itself, nor is it easy to approach. Like a part of nature, it waits until it is discovered." The discovery is always an inner one.

The Archetypal Structure of the 64 Hexagrams

The 64 hexagrams of the I Ching are not random configurations. They form a complete symbolic system — a grammar of the psyche.

Each hexagram is composed of two trigrams (three-line figures). The eight trigrams represent fundamental archetypal forces:

When two trigrams combine, they create a dynamic tension — a psychological situation. Hexagram 3 (Difficulty at the Beginning), for example, combines Water ☵ above Thunder ☳: the chaos of birth, the struggle of emergence. Every person who has started a new creative project, a new relationship, or a new phase of life knows this archetypal pattern intimately.

A Practical Example: The Psychologist's Cast

Imagine a woman named Clara who feels stuck in her career. She has been offered a promotion but feels inexplicably resistant. She casts the I Ching with the question: What unconscious pattern is creating my resistance?

She throws the coins and receives Hexagram 29 — The Abysmal (Water), with a moving line in the fourth position.

The Abysmal Water hexagram is the archetype of danger, of the deep, of falling into darkness. The moving line's text reads: "A jug of wine, a bowl of rice, earthen vessels. Simply holding on brings good fortune."

Psychologically, this is not a prediction. It is a mirror. Clara recognizes that her resistance is a fear of falling — of leaving the known shore of her current role and entering the depths of greater responsibility. The advice is not "take the job" or "decline the job." It is an instruction about her inner stance: simply hold on. You do not need elaborate preparations. You need presence.

This is the I Ching at its most potent — not giving answers, but asking better questions of the soul.

FAQ: Psychological Questions About the I Ching

Q: Isn't this just superstition? A: Only if you treat it superstitiously. When Jung used the I Ching, he observed that the hexagram and the psychological state of the questioner coincided in a way that defied statistical probability — yet he never claimed the hexagram caused anything. The I Ching is a tool for making visible the patterns already present in the unconscious. It works not by magic, but by the psychological principle of projection: we see ourselves in the symbol because the symbol was designed over millennia to hold archetypal meaning.

Q: How do I know if I'm "doing it right"? A: There is no wrong way if your intent is sincere. If you cast with a spirit of genuine self-inquiry, the I Ching will respond — sometimes with unsettling precision, sometimes with confusion. The confusion itself is data. Confusion in response to a hexagram often means you are touching something your conscious mind does not yet want to see.

Q: Can I use an app instead of coins? A: Digitally generated randomness can still produce synchronistic results — the principle is not about the physical coins but about the meaning-making act of consulting the oracle. However, the physical ritual of tossing coins, writing lines, and building the hexagram by hand carries its own psychological weight. It slows you down. It forces presence. For deep work, coins are recommended. For daily check-ins, an app may suffice.

Q: What if the reading seems completely off? A: This happens. Sometimes it means your question was not genuine — you asked with a hidden agenda. Sometimes it means the answer will only make sense in retrospect. Sit with the hexagram for a day or two. The meaning often emerges as the unconscious integrates the symbol.

Q: Is this Jungian interpretation faithful to the original Chinese tradition? A: The I Ching itself is thousands of years old, and it has always been more than a divination tool. Confucius said he would gladly study it for fifty more years to avoid great errors. The ancient Chinese already understood that the I Ching was a tool for cultivating wisdom, not predicting outcomes. The Jungian lens adds a language — archetype, individuation, the collective unconscious — that helps the modern Western mind access what the tradition always knew.

A Journaling Prompt for Your First Cast

Before you throw the coins, write this in your journal:

I am casting the I Ching not to know what will happen, but to know what is happening within me. I release attachment to specific answers. I open myself to the pattern the unconscious wants to show me today. Whatever hexagram appears, I will meet it with curiosity and courage.

Then cast. Write down the hexagram number, the moving lines, and any immediate impressions. Do not analyze. Let the symbols do their work in your psyche overnight. In the morning, return to your journal and write what arises.

This is the beginning of a genuine relationship with the Book of Changes — not as a fortune-teller, but as a guide to the depths.