What do your stats tell you? 
In addition to generating typical MFE/MAE numbers per trade, I also generate "MOT" (Money {left} On {the} Table) statistics based on the next nearest reversal/pivot point AFTER I closed the position. I'm a scalper by choice, though I still want to know how much I'm leaving behind so I can set my targets appropriately (generally 5-8 ticks for NQ or YM).
There are definitely some moves where I leave quite a bit "on the table"; then again, 85%-90% of the time I don't really care as long as it hits my target
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In addition to generating typical MFE/MAE numbers per trade, I also generate "MOT" (Money {left} On {the} Table) statistics based on the next nearest reversal/pivot point AFTER I closed the position. I'm a scalper by choice, though I still want to know how much I'm leaving behind so I can set my targets appropriately (generally 5-8 ticks for NQ or YM).
There are definitely some moves where I leave quite a bit "on the table"; then again, 85%-90% of the time I don't really care as long as it hits my target
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- but no, I never kick myself. It's more so I know 1) how many opportunities typically present themselves (per security, per day) and 2) the size of the major and minor (reversal) moves in ticks for setting appropriate targets.