I try not to interfere because then that's just fking with my...

I try not to interfere because then that's just fking with my system. I've lost more than I've gained when making discretionary decisions against my system.

Some of my sell rules:
When price has hit 1R (that is it has moved up to 1 x my initial risk amount) stop loss moved to break even.
Stop loss trails the ema that the stock is respecting the most, 5, 10 or 20ema (these are fast moving averages so I'm chasing fast stocks). Never lower stop loss.
If EOD stock reverses on volume (bearish engulfing candle) close position.

I found sell rules difficult to design and implement, maybe because they highlight it's hard to efficiently close a position while realising it's maximum potential. My breakout trend strategy (not the current wbt trade) can make huge returns but they're infrequent and has a lot of failures to mentally overcome while you wait on the winners.