On the perils of ignoring your own plan, even for a day

Was reviewing my trades from last week and a pretty clear lesson jumped out. Had a well-defined short thesis on $EURUSD from early in the week, with clear invalidation and profit targets. For some reason, on Thursday, I started second-guessing the primary target and closed out half my position prematurely based on some short-term noise on a lower timeframe. Of course, the market hit my original target on Friday. The mistake wasn't necessarily being wrong on the target, but failing to stick to my pre-defined plan because of short-term noise, leading to underperformance on a perfectly valid trade idea. It's a classic case of letting emotional impatience override disciplined execution.