LIke you mentioned, opiates are what did me in. Not even heroin either, just these damn prescription painkillers. Heavy abuse over the course of two years has seemed to change my brain chemistry, as some threads have mentioned before. I'm not physically addicted anymore, but the mental addiction is still making my life a living hell.
The depression and anxiety are not allowing me to have a normal life. I just don't feel "normal" or "comforable" around strangers especially, if I don't have painkillers running through my blood stream. So, I guess I could be considered a lifer. I wonder how long it would take completely obstaining from opiates it would take to feel normal again? I've yet to go over a month. Even though I know it's just going to set me back in the whole process, that feeling of being contempt for a few hours brings me back