Praying! Nicotine is a HARD one to kick. But with God, all things are possible! One day, one hour, one minute, and one cigarette at a time. When you get the urge to have a cigarette, get up, move around, tell yourself "if I still WANT one in 10 minutes, I'll take ONE puff", and then get busy. (also, ask God to take the urge away!!)
Some friends found that keeping carrot sticks ready to eat in the fridge really helped with the "needing something in the mouth" habits.
Also, get rid of EVERYTHING that supports your habit in the house. Ashtrays, lighters, cigarettes. If you absolutely must do this slowly, then keep ONE ashtray, one lighter, and figure out exactly what schedule you are going to use. Write it down... X number of cigarettes today, X-1 tomorrow, etc. And then keep ONLY enough cigarettes in the house to meet your goal.
Maybe if you have to physically go out and buy more, it will help you make the decision to not do it right then... and the longer you go, the better off you'll be.
Summerthyme