Why psychology decides outcomes
Most people fail in markets not from a lack of information but from a lack of discipline. The same brain that kept us safe on the savannah — fear, greed, herd instinct — works against us when money is on the line.
You cannot remove emotion, but you can build a process that survives it. That is what this module is about.
The biases that cost money
- Loss aversion — losses hurt about twice as much as equivalent gains feel good, so we hold losers too long and sell winners too early.
- Confirmation bias — we seek information that agrees with us and ignore the rest.
- Recency bias — we over-weight what just happened and extrapolate it forever.
- Overconfidence — a few wins convince us we've “figured it out”, and position sizes creep up.
- Herding & FOMB — buying because everyone else is, usually near the top.
Building discipline
- Write a plan before the market opens — entries, exits and size decided when you are calm.
- Pre-commit to risk — the stop and position size are set before the trade, not during it.
- Separate decision from outcome — a good decision can lose and a bad one can win; judge the process.
- Take breaks — tilt (revenge trading after a loss) is where accounts die.
Process over prediction. You control your preparation, sizing and discipline; you do not control the market's next move.
The trading journal
A journal turns experience into improvement. For each decision, record the reason, the risk, the emotion and the outcome. Over time, patterns emerge — usually about behaviour, not about the market.
Key terms
Tilt
Emotionally-driven, often revenge, trading after a loss or a win.
FOMO
Fear of missing out — chasing a move that has already happened.
Process vs outcome
Judging decisions by whether they were sound, not only by whether they made money.
Pre-mortem
Imagining, before you act, how the decision could go wrong — and planning for it.
Test yourself
1. Loss aversion tends to make people…
Because losses hurt more, we avoid realising them and hold losers too long.
2. The healthiest way to judge a single trade is by…
Good process can still lose; judge the decision, not just the outcome.
3. A trading journal mainly reveals patterns about…
Journals mostly expose behavioural patterns you can then fix.
FAQs
You can't remove emotion, but you can build a process — a written plan, pre-committed risk, and a journal — that keeps emotion from making the decisions. That structure is what improves with practice.
Tilt is emotionally-driven trading, often revenge trading right after a loss to “win it back”. It usually leads to oversized, unplanned trades and is one of the fastest ways to damage an account.
Because markets are probabilistic: a well-reasoned, well-sized decision can lose, and a reckless one can win. If you only reward outcomes, you'll learn the wrong lessons. Judging the process keeps you disciplined.
No. PCJ does not provide tips, signals or advice. These are general behavioural principles to help you make your own decisions more calmly.
Educational content for general awareness only — not investment, trading or tax advice, and not a recommendation to buy or sell any security. PCJ Holdings does not provide research or advisory services. Examples and calculator outputs are hypothetical and illustrative. Investments in securities markets are subject to market risks; read all related documents carefully. Figures are indicative for FY 2025-26 and may change.