I haven't cracked smoking yet, got a 20 - 30 a day habit, been smoking for 25 years. I have 'given up' a number of times for long periods of over a year, with my best being three years. In the last decade I have definitely been a non- smoker more than 50% of the time which I guess must be better than not stopping at all.
I know a number of successful quitters who have stopped for long periods and used various methods, probably all those mentioned already. The most 'hardcore' smoker I know has remained stopped for many years now after using 'Ziban' or something like that from the doctor, but it can have side effects.
Best success for me comes with patches just to ease over the first few days and willpower from then on. If I can get passed the first few days I can stop for a long time although may crack under a combination of stress and lots of beer.
I also find NOT avoiding situations where you smoke, like the pub, and getting used to not smoking in those situations quicker, is better in the long run. Different ways work for different people and you have to find whats best for you.
I reckon reading this ongoing thread may not help though, it'll just keep reminding you of cigarettes and smoking:001_tongue: seriously though, Good luck.