I found that every time I wanted a cigarette, a glass of pure grapefruit juice helped.
Now, this is not as horid as it sounds, but how it works (well how it worked for me anyway) was everytime I wanted to smoke, I had a glass of grapefruit juice. Then, if I still had the urge to light up, I physically couldn't because the taste of the cigarette coupled with the acid from the juice literally made me want to be sick.
I soon realised it was cheaper and healthier to buy seven cartons of grapefruit juice a week than a pack of cigarettes a day.
I am not saying it is easy, not by a long shot (the first two months are the hardest I found) and while the various aids available from the doctor are all well and good, you will only really quit if you want to quit. It all comes down to willpower in the end
Plus, when you think what the Savior went through for us, the word of wisdom does not really ask us for much in return, does it?
Whether or not you decide to join the church, you will feel the benefits of not smoking, so I wish you the best of luck.