The real cost of chasing that last tick

Hey everyone, just joined and looking forward to learning from this community. Been trading for a solid five years now, mostly futures and some spot FX. My biggest lesson, one that still bites me sometimes, is the urge to chase that last little bit of profit on a winning trade. I remember a specific $ES move a couple of years back; had a fantastic long from 4200, price was consolidating around 4250, my original target was 4260. Instead of taking profits there, I moved my stop to breakeven, convinced it was going to 4280 minimum. Market reversed sharply, I got stopped out for zero profit after having been up a significant amount. It wasn't even a loss, but the psychological hit of watching a great winner turn into a breakeven was worse than many small losses. It taught me that sometimes, leaving a bit on the table is the smart play, and that greed, even subtle greed, is a silent killer of good setups. Sticking to the plan, even when it feels conservative, is usually the more profitable long-term strategy.