I had also tried quitting many many times - with no luck, and while trying previously, I have to say, all I could think about was having a smoke. This did not happen with Champix. I have been a smoker for 30 years,20 to 50 smokes a day, and tried many methods to quit. Usually after trying to quit, I would only end up taking it back up, and smoke more than I previously had.
This I have found to be the easiest, I quite often feel like I have cheated some how, that it coudnt be this easy. Other than a few light cravings and a bit of tiredness in the first two weeks, I have had no side effects. After day 14 I just quit. I really didnt feel like smoking any more. I am still on the program, into week 4 and I am now a non smoker.
I would like to mention that I did this while my partner still smoked around me.
My personal feeling is that you have to want to quit for yourself, and not for what others want or say.
Anyway, I would also recommend that you at least give it a shot. I did because I had another friend who was a heavy smoker like me, and had been smoke free for three months at that time, and she still is.
Good luck to you all.