Although I'm not an addict I've found some of their stuff helpful. Like the one day at a time, when one day is too hard I make it into an hour at a time, or even one minute at a time. You can tell your self just for today I shall not cut, or just for the next hour I shall not cut, and then after the time passes say it again.
I've used this to stop myself from acting on the suicidal thoughts that come with deep depressions. There is something calming about telling myself I don't have to deal with te thoughts until the next day.