Help please

I have been picking for as long as I can remember. Mostly at my gums. Whatever skin I could pick off Of myself I would eat. And the more painful it was, the more relief I would get from it. I my gums are receding so badly that I fear that if I don't stop m Now my teeth will fall out. Has anyone had any real success in stopping or have any suggestions ? It's so nice knowing I am not alone . I was so embarrassed to mention it until I realized this is a real condition, not just a bad habit.