Five practice mistakes and how to review them

1. Confusing intention with execution

Submitting an order does not by itself establish a position. Check status, filled quantity and remaining orders. Before repeating an instruction, explain what happened to the previous one. Record any simplified execution assumptions used by the exercise.

2. Comparing figures without units or costs

Ten points in different instruments do not necessarily have the same value. Label movement, point value, quantity and currency. Compare gross and net results under the same model; do not attribute an improvement to the method when one attempt omits costs.

Synthetic example: a gross result of 8 with costs of 3 leaves 5. Another attempt showing 7 without stated costs cannot support a net comparison. Complete the assumptions before deciding which attempt was better.

3. Changing a rule after learning the outcome

Keep the original rule. If an observation suggests a change, write a new version for a later test and preserve the old one. Changing success criteria after seeing results makes learning harder to distinguish from retrospective justification.

4. Treating familiar repetition as a new case

Repetition helps practise interface actions or checks. Remembering the outcome, however, can guide decisions. Record whether the scenario was familiar and what you were rehearsing. Afterwards, check the skill in a different scenario without presenting the tasks as equivalent.

5. Measuring everything through profit

Keep simulated financial results, but also review rule execution, mistakes and record quality. A gain may accompany an incorrect action; a loss may accompany a coherent process. You need both layers to choose what to practise.

At the end, select an observable error and a small task. Do not turn the list into a personal accusation. If several foundational questions arise, revisit a lesson before adding speed or complexity.

• What happened and the evidence confirming it.
• Which rule or concept needs revisiting.
• What you will check in the next attempt.