My patience which leads over-aggressiveness... (I see other tables/average stacks way ahead of mine and try too hard to catch up)
Vindictiveness, which also leads to over-aggression (I hate bad beats when the the other player wins with like a 72o that kept betting/calling to the river even though they HAD to know my hand was/would be better or people that keep betting into my blinds, but no one elses, assuming, I guess, that i'm some passive donk... maybe i'm card dead...?) So I do my best to wait until the offender is in the blinds or some other uncompromising position and then I Bomb on 'em Full Stack...
um... er...
Let's just say that strategy doesn't always work
Believe me, I know... lol...
Aggression is good, but not when it leaves me sitting on the rails...
I'll have to work on this...