Use reflection prompts that produce learning, not diary volume

The short answer

A useful reflection records what happened, why you currently think it happened, what remains uncertain and what changes next. Keep facts separate from interpretation and turn repeated observations into hypotheses before treating them as personal truths.

Use four daily questions

1. Evidence What important result or externally visible movement happened today?
2. Gap Where did reality differ most from the plan or expectation?
3. Explanation What is the leading explanation, and what alternative explanation still fits?
4. Change What specific action, boundary or decision changes tomorrow?

Promote patterns carefully

Daily emotion is valuable context but weak evidence for a permanent conclusion. Keep observations dated and contextual. Look for repetition across similar days before concluding that a routine, environment or type of work reliably helps or hurts.

A reflection that changes nothing can still be meaningful personally, but it should not be mistaken for an operating insight. Mark which entries changed a plan, goal or decision.

Questions

How long should daily reflection take?

Five minutes is enough when the questions are specific and the rest of the day is already captured.

Should reflections be scored?

Score only dimensions that help reveal a decision-relevant pattern; keep open text for explanation and uncertainty.

What if I do not know why something happened?

Write unknown and list the cheapest evidence that could distinguish the leading explanations.