I've been smoke-free for 7 years now. Once you get past the first week it gets better. The first week is the physical withdrawal, after that you just need to concentrate on breaking the habit. Keep your hands busy (but not busy with food!). Avoid the places where you used to light up. Change the thoughts about lighting up with thoughts about the benefits of being a non-smoker (save $$$, better health, no more smelly clothes, better workouts, no more excuses not to somewhere because it's non-smoking, etc). If you still have the urge, go out and take a walk, clean the house, learn to knit, anything! My house was never so clean as when I decided to quit smoking. LOL
Every now and then I will get an odd craving for one. The feeling passes quickly though. Unlike most people who quit I still don't dislike the smell of smoke.