I smoked 3 packs a week for just over 2 years. I have not had a ciggerette for 1 year and 3 months. Want to know how I did it? I stopped smoking. Dont pay attention to 'cravings', just dont do it. Its actually quite simple. You know how to not do something, right? Its kind of like doing something, but not doing it at all. Thats the trick, if you dont do it, you wont do it.

but seriously, nicotine and the gum etc is just a desperate cry for help and makes people richer and yourself, poorer. The only way to quit, is to stop. Take it from me, better health will not be your only reward. You will have a sense of accomplishment as well as a fatter wallet.