A good decision can lose and a bad one can win. Judging yourself on process, not the last result.
This capstone of trading psychology addresses the deepest mental shift of all: separating your ego and self-judgement from individual outcomes. Because markets are probabilistic, a good decision can lose and a bad decision can win — so judging yourself by results is judging the wrong thing.
The liberating principle:
judge your decisions and process, not individual outcomes — because in a probabilistic game, outcome and decision-quality are only loosely linked in the short run. A
good trade (correct process, proper risk, positive
expectancyThe average profit or loss you can expect per trade.) can still
lose — that’s
varianceThe square of standard deviation — dispersion of returns., not a mistake. A
bad trade (no setup, oversized, pure gamble) can still
win — that’s luck, not skill. If you tie your ego to outcomes, you draw exactly the wrong lessons: you feel like a genius after a
lucky bad trade (and repeat the recklessness) and like a failure after an
unlucky good one (and abandon a sound process). This is
outcome bias, and it corrupts learning. Detachment fixes it: you evaluate
“did I follow my process and make a sound, well-reasoned decision with proper risk?” — and if yes, it was a
good trade regardless of whether it won or lost. This does three things: it lets you
stick with a winning process through losses,
stay humble after lucky wins, and
protect your emotional stability (your self-worth isn’t
whipsawedRapid reversals that trigger losing trades both ways. by every result). The masters internalise this completely — they take pride in
good decisions, accept losses on good decisions calmly, and feel uneasy (not proud) about winning on bad ones. Removing ego from the outcome is what makes consistent, rational, repeatable behaviour possible — the foundation everything else in this track rests on.
- The principle — judge process/decision quality, not individual outcomes; they’re only loosely linked short-term.
- Good trades can lose (varianceThe square of standard deviation — dispersion of returns.), bad trades can win (luck); tying ego to outcomes teaches the wrong lessons (outcome bias).
- The test — “did I follow my process with sound reasoning and proper risk?” If yes, it was a good trade win or lose.
- The payoff — stick with a winning process through losses, stay humble after lucky wins, protect emotional stability.
ExampleTwo trades: (A) a textbook setup, properly sized, that happened to lose; (B) a reckless oversized gamble with no plan that happened to win. Outcome-focused, you’d feel bad about A and great about B — and learn to repeat B’s recklessness and doubt A’s discipline. Process-focused, you recognise A as a good trade (sound decision, unlucky result) and B as a bad one (lucky escape) — preserving discipline and learning the right lessons.
Key takeawayIn a probabilistic game, judge your
decisions and process, not individual outcomes: a good trade can lose (
varianceThe square of standard deviation — dispersion of returns.) and a bad one can win (luck), so outcome-based self-judgement teaches the wrong lessons (outcome bias). Ask “did I follow a sound process with proper risk?” — if yes, it was a good trade win or lose. Detaching ego from outcome makes consistent, rational behaviour possible.