What about this hand made you suspect that you played poorly? Every step to this hand went as perfectly as you could have wished, with the exception, of course, of the third jack falling.

Pushing all in preflop may have gotten you heads up, but if you did have a stack with 10 or so BB's, then I wouldn't mind a third person calling preflop. Chances are he's got a pocket pair or AK, both of which you have dominated, and the vast majority of the time you're going to take the pot.