The siren song of 'just one more trade' on $SPX

Been thinking a lot about a particular overtrading scenario that cost me a good chunk last quarter. Had a decent run on $SPX puts, felt pretty good about reading the tape that day. Market started consolidating late in the session, typical range-bound action. Instead of walking away with the gains, the thought crept in: "just one more scalp before close." Saw what I thought was a breakdown forming, jumped back in. It was a false move, got caught in the snapback. Tried to double down to recover, then another chop. Ended up giving back nearly half of the day's profit in the last 45 minutes, all chasing something that wasn't there anymore.

It wasn't a bad setup to begin with, but my discipline evaporated. The lesson, again, is knowing when your edge is gone and being able to shut down the screen. That late-day liquidity often isn't your friend when you're already in a fatigued state. Your initial read might be solid, but forcing trades when the context changes, or when your own psychological state shifts, is a killer.