I can't speak for anyone else than myself, but a big part of my drug use has revolved around making things worse than they are, as so to create a desire for the drug I would consume. Just like getting unconciously stressed up before a smoke break, I would make comedowns and sober times worse than they really were just so the kick from using would be greater. Realizing this has made the desire for drugs lesser than they were, if one can manage to make their sobriety and withdrawals feel good, it is possible to actually forget about using.
I believe in moving away from ones past life and surroundings, and to quit everything including cigarettes and even coffee, as this affects the nervous system and mood. Practice being good to oneself, it will be hard at first but soon the body and soul will get used to responding to healthy pleasure and good feelings.
I would beat myself, reject good things and repress tears just to "harden up", to soothe the pain and depression by (how do you say) getting used to it.
Best wishes to everyone seeking a drug free life. It will be good again. I promise.
-from Norway