If you use the program properly, you will not have to fight cravings while you use it because it is designed so that you can smoke as you please while you use it. In fact I encourage you to continue smoking while you use it, because if you don't, you're causing yourself stress and that leads to cravings which trigger stress, and it usually results in smoking again.

Once the program is finished, you should never again have cravings to smoke. If you do, running the program again for 6 more months will take care of that for good.