My feet are so painful!

I just can't stop picking the skin off the soles of my feet. Because the skin's harder there, it doesn't hurt so much at the time and it's easy to go too far and too deep. At the moment I've got two deep gouges on the bottom of each foot and they're driving me crazy. I've been getting home from work with my socks soaked in blood and the wounds are so itchy and painful. Every time I take a step I'm reminded of what I've done to myself, and I hate it, but glad that nobody can see. Oh, when will it heal? Usually they heal up pretty fast, or at least get to the point where I can walk comfortably, but this is taking ages. AAGH.