Trading psychology: a journal that measures decisions
Review behaviour with observable records instead of explaining every result after the event.
Separate decision quality from outcome
A trade that followed a tested process can lose. An impulsive oversized trade can win. Judging both only by profit rewards the wrong behaviour. Before entry, record the setup, trigger, invalidation, intended size and reason to skip. After exit, record the actual actions without rewriting the original plan.
Make common errors measurable
Define late entry, revenge trading and rule changes with observable criteria. For example, “entered after the planned trigger window” is easier to audit than “felt emotional.” Record whether size increased following a loss, whether the stop was widened and whether a trade was taken outside the planned session. Choose a small number of behaviours so the journal remains usable.
Worked example: review two trades
Trade A followed the plan and lost 1R. Trade B ignored the stop and eventually gained 0.5R. The combined result is −0.5R, but the process review should mark A as compliant and B as a risk violation. Otherwise the profitable violation can become a habit. R means the original planned cash risk, not a value recalculated after the stop is moved.
Design a pause rule before the session
A pause can follow a predefined loss limit, repeated input errors, fatigue or unstable connectivity. Its purpose is to interrupt a known failure mode. Write what must be checked before resuming. Do not convert a pause into a promise to make the losses back later the same day.
Review patterns over a meaningful record
A short winning streak can occur by chance. Use consistent definitions and retain screenshots or order records where available. Compare rule-compliant and non-compliant trades, including costs. Changes should address a repeatable issue, not the most recent painful result. Keep older rule versions so an improvement can be evaluated rather than assumed.
Practical journal template
Use columns for date, instrument, setup, planned risk, actual result in R, fees, rule followed, error category and next action. A useful next action is specific, such as checking quantity before submission. “Be more disciplined” cannot be tested. Journalling supports a process; it cannot create a trading edge or remove uncertainty.
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Sources and scope
Official educational reference. The numerical examples and exercises are BestBRKR teaching scenarios, not historical results or personal investment advice. Account terms can change; verify the selected product and jurisdiction.
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