I've been dealing with some pretty serious cravings myself lately. The first thing to realize is that they aren't permanent. They may last a long time especially at the beginning but eventually they will go away and you'll be glad you resisted. For me one thing that works really well for making them go away is exercise. It calms you down and helps get you in a better state of mind to resist them. Other than that just try to distract yourself by doing something else. If I just sit around and think about the craving it makes it worse.