Sounds to me like you don't know when to fold. If the call is high before the flop and you don't have much, fold. If you don't have anything after the flop (and you're not holding both parts of a flush or straight that looks promising), fold. If you have pocket kings (or a pocket face), but there isn't your face on the flop or a good chance for a straight, fold.
Learn your opponents, also. We have a guy who is really frugal with his chips, and can't lie. So, whenever he puts in half of his chips by the turn, I know to get out.