1) On your Quit Date, you MUST get rid of ALL your cigarettes, lighters, matches and ashtrays. Check your purse, your car, your pockets, your kitchen drawer, etc. If you cannot put your hands on a cigarette during a strong craving, obviously you can't smoke one. The craving is likely to pass before you do anything you'll regret.
2) Always be prepared. NEVER find yourself in a situation where you haven't planned IN ADVANCE how you will distract yourself if a craving hits you. And make sure you have whatever supplies you will need to accomplish that distraction. Cravings rise, peak and ebb away. Keep your brain and your hands busy during those few minutes.
3) Cookies are part of the journey. This is important. Also: Where there is cake, there is hope. Ask any Elder... ;-)