The one mistake killing your day trading account

If you're breakeven or down for the year, it's almost certainly this: **You're trading too big after wins and too small after losses.** This is the opposite of what works. After a win, you should be at NORMAL size. After a loss, you should be at HALF size until you find your rhythm again. The reason most traders blow up isn't bad strategy — it's bad sizing during emotional periods. Your edge gets erased by variance when you size up at the wrong time. Here's the fix: write your max position size on a sticky note above your monitor. Never exceed it, regardless of how confident you feel.