[Speeddemonstar]

I've always had a craving to chew on something ever since I was a baby. I chew on my left thumb, it bleeds sometimes... I also chew on my bottom lip, all the time, it bleeds almost every day... I feel like I have to always chew on something, I've tried chewing gum, but it just doesn't satify my craving to chew anymore...
I started cutting(on my arm) when I was in 3rd grade(diff reasons). I'm now about to go into 9th grade. I haven't cut my arm in about 2 months. well, back when I was cutting, gum worked to satify my craving to chew but now I have to chew on my thumb or lip. I know it sounds weird, but I like the feel of the pain.
I want to quit chewing on my lip and thumb. I've tried chewing other things, but I chew so often and so hard that everything I've tried, I go through so fast that it gets expensive...
any ideas?