One of the tricks a friend helped me discover and use was to not open what i bought and to tape the reciepts to each item. That way when i came down i could return all the items and get my money back. It also saved me from that black depression of realizing how bad i screwed up because i was allways able to return most of what i bought.
That was all before meds, which thankfully now give me the relief to not suffer those urges. I now am much more interested in saving money, so much so that my wife wants to strangle me sometimes for my penny pinching ways. LOL LOL LOL