Best of luck to you. I know there can be bad side effects from Chantix, so check into it carefully for you, but if you find yourself really struggling, do check into it. My Mom smoked for 40+ years. She quit once for almost 3 years, then went back to it. Chantix is what finally got her to change the habit, and her physical urge to smoke is completely gone (she still struggles with some mental/habit urges from time to time, but the physical "no" is so overpowering now that she really has no desire to pick it up again). It is very effective when nothing else is (she had tried therapy, hypnosis, nicorette, wellbutrin, and all sorts of other natural and unnatural aids to quitting in the past, to no avail).

For some reason, despite growing up around my Mom and swearing I would never, ever, smoke, I still picked up the habit in grad school and continued until I was preggers with my first child. So I know how hard it can be, too. Good luck, and hang in there.