A session review that ends with "I should have folded there" changes nothing. The goal of review is not to feel the mistake again — it is to turn it into a rule you can apply next time without thinking.
Flag while you play, judge later
Trying to analyse a hand mid-session costs you focus on the next one. Mark the hand and move on. Do the judging in a dedicated block when you can look at the spot properly and without results bias.
Name the mistake in one category
Every misplay you review should get a label: wrong range, wrong sizing, wrong read, or wrong discipline. If you can't fit it into one, you haven't understood it yet. The labels also let you count — five "wrong sizing" hands in a week tells you exactly what to drill.
Rebuild the decision, not the result
Ask what you knew at the moment of the decision and what the right action was given only that. A hand you played correctly and lost does not belong in the review pile. A hand you played badly and won does.
Convert each one into a rep
For every labelled mistake, add the corresponding spot to your drilling rotation for the next week. Review that does not feed back into practice is a diary, not a training method.
Keep the list short
Three hands reviewed properly beats twenty skimmed. Pick the ones where the money was biggest or the pattern was clearest, and let the rest go.