I am the EXACT same way. I will pick at something that isn't ready yet either. Sometimes it just looks like there might be something there and I pick at it whether it is ready or not. I have an obsession with this and I have tried so hard to stop. Sometimes I will pick at the same zit ten times in one day. It drives me nuts! I just can't let it go....it is like I just want to see how bad I can get it just to watch it heal. But then I am so mad at myself for what I have done to my face that I just cry! It is just a vicious cycle.
I don't know how to tell you to stop because I am still trying to stop doing this myself. I don't know, maybe try rewarding yourself with something nice if you can go a whole week without touching anything on your face!!