I know how you feel! We all do here. I quit two years ago with Wellbutrin, I turned into a raving maniac, gained 30 pounds, and finally, 4 months later, drove to a gas station at 12:35 AM and got a pack of smokes. Don't do that. Call Mark.
Good luck.
Ugh...I went the Wellbutrin route last summer in my last attempt to quit. For two months I was a raving lunatic, and still wasn't able to quit completely - I just cut down, to smoking only when I was home (which was about two waking hours day, but I managed to suck down a pack in that short time to compensate - so kind of even worse?). Anyway, I stopped, when I had an incident - I went to a cafe for lunch, ordered a salad, requested grated Parmesan cheese on it. The waitress brought the salad with shredded cheese. I. Flipped. Out. I started yelling at the poor lady, and stormed out of there without paying, saying it was the worst service I'd ever gotten. Walking away, I realize how friggin crazy I was acting, and by then I had done enough research on Wellbutrin to find that this was a common side effect - inexplicable rage. Dropped that junk.
Which makes me even more furious at the attempts by tobacco lobbyists to make e-cigs illegal, since they're "not FDA approved." Okay, the FDA approves proven cancer-causing burning sticks of leaves, and mind-altering drugs known to cause suicides - and somehow we're supposed to follow their edicts.