I quit 2 weeks ago and I haven't had one since. I planned to do it while I started a bulking routine. So I eat and eat throughout the day. Works for me anyways. When I quit smoking it makes me very, very hungry for almost everything. I have a stash of stuff in my desk and I basically nibble all throughout the day.
Gum helps a bunch too. Sugarfree Extra cinnamon is my choice. I go through about a pack a day (of gum).
I feel great! I'm telling you just keep strong because you will feel much better as the nicotine filters out of your body. My workouts have been more intense and I know now that smoking has hindered all of my gains. I can't wait to see how much better my gains will be now.
Good luck and just stick with it. There's worse things in life. Like cancer, strokes, heart attacks and a limp dick.. all of which can be caused by cigarette smoking.