Hi!  I am also schizophrenic and I was having a hard time quitting smoking.  Then my ex's mother told me about Wellbutrin.  It's an anti-depressant that helps you quit smoking.  I went on it and with in a week I was no longer having that feeling where I NEEDED a cigarette.  But I was still addicted to the action.  And I think I was a little emotionally attached.   But I was smoking less and less until I was down to like two cigarettes, then one cigarette a day.  Then I just stopped.  It was great.  A few months later I quit taking the wellbutrin because of some irritability I was feeling, but we all have dfferent effects from drugs.  It's definitely worth a try.  Haven't smoked since.  Good Luck!