depends on what sort of addict you was in the past, valium at night to help you get to sleep does wonders, heard people resorting to the seroquel too. When I came off it once in hospital they didn't really care just gave me some valium at night and if i wanted during the day but i was in a completely different environment and stimulated in different ways where as being in the same environment as you have been smoking and trying to quit can be tough because when I abruptly stopped smoking street weed felt pretty hard but but most of the times I've stopped hasn't been a big deal.