One thing that really helps me get through those times when I want to do something I might regret later is to tell myself, "I COULD do this....but I WON'T". It sounds incredibly simplistic, but it helps so much. It's like it helps me sort of realize that I have more control over things than I think.
Another thing that helps when I'm having compulsions like that is to ask myself what I want, and what am I feeling. Getting in touch with my feelings and telling myself it's okay to feel that way...it will pass. It always does. That helps me.
Good luck, hope things get better.