It's not recommended. Everyone, no matter what their habit, even smoking cigarettes, need a support system. You will have the "craving for it" for the next 10 years and thats WITH a support system in place. The first thing that you need to do, as hard as THAT may be, is to remove yourself from the situations and friends that you have done this with.
I wish you the BEST of luck and hope you continue to keep a hub on how you are making out, maybe it will help someone who is going through the same thing, but leary about publishing it.