Scalping session journal — London open, Tuesday. Setup: Pre-marked EUR/USD levels at 1.0815, 1.0822, 1.0830 from the Asian session. Trade 1: 1.0815 long (Asian low support touch), 1m pin bar. Entry 1.0815, stop 1.0808, TP 1.0823. Hit TP in 12 minutes. +8 pips. Trade 2: 1.0830 short (Asian high rejection), 1m engulfing. Entry 1.0829, stop 1.0836, TP 1.0820. Hit TP in 22 minutes. +9 pips. Trade 3: 1.0820 long again after pullback. Entry 1.0821, stop 1.0813, TP 1.0830. Stopped out at 1.0813 when EUR/USD broke the range with momentum. -8 pips. Stopped there — hit 2/3 trades, net +9 pips on the session. Lesson: Stopping after the third trade was important. The range broke and continuing to scalp it would have been trading a new, undefined structure. Know when the structure changes. What's your rule for stopping a scalping session mid-way?