It sounds like you're being results oriented, which you shouldn't be. It's always best to get your chips in the middle when you're ahead, and PF with AA or KK and occasionally QQ or JJ, you're generally ahead.
The problem with many players these days is that they think that AA and KK are invincible.
Think about it: What kinds of hands do you generally see when the hand reaches the showdown?
straights, flushes, 2 pair, trips, full houses...AA is only one pair
. It's dominates any hand preflop, but people overvalue it and that's why so many get such bad beats.
Bill_Hollorian made a great thread about not giving implied http://www.cardschat.com/showthread....t=implied+odds
So basically what i'm saying is always get your money in before the flop with AA and most of the time with KK if possible.
QQ and JJ are great hands too, but generally you don't want to risk your whole stack with them. Raise them like you would any top 10 hand, and see what the flop brings. If an overcard drops and you're opponent starts jamming the flop, then just let 'em go. Also if your opponent is a super tight player, you wouldn't want your money riding on a JJ.