One small bit of advise, if you haven't already found where you are losing your chips, next game pay close attention to how you are losing. Are you chasing too much, putting too many of your chips at risk on good hands (A,K - A,J) or bluffing too much?
For me, I found that I was putting too much stack in the pot for A,K and J,J type hands. While these are great starting hands, they can be beat and I was getting beat with them to the tune of most my stack.
I still can't resist an open-ended straight draw when I also have a flush draw.
Kills me when you think there is no way that can't hit.