Trouble with big pots.

[Pokerho]

This is my first time in the psychology forum, and I find it very interesting so far. Hopefully someone can offer me some insight.

I'm a generally winning on-line player, though since UIGEA, my profits have been way down. One big problem I seem to be having is getting stacked when I shouldn't. I tend to go all in with hands that I shouldn't, either bluffing at a pot or thinking "this guy can't possibly have...", even though it seems like the right play at the time. PT shows my won $ at sd to be a very consistent 47 or so % for both pre and post UIGEA, for whatever that's worth.

Is there any way to fix this short of just not being a moron?