Variance is real. Good decisions can lose tonight. That does not mean results don't matter long-term — it means one session is a noisy sample.
Track decisions you can control: starting hands, pot odds folds, leaving tough tables. Don't track 'deserve.'
Good decisions can lose tonight. Track decision quality, not deserve.
'You can play well and lose' (bankroll and mental game, G0): Tilt is a process failure; pre-written stop rules beat post-session regret.