Eat lots of high-fiber foods like fresh vegetables, fruits and grains. They're low in calories and keep your mouth busy with something besides holding a cigarette. Choose sensible snacks. But don't go overboard. Leave the table after a meal but before a dessert, especially if that's when you used to light up.
Vigorous exercise can help curb both nicotine and food cravings at once.
Go for something thing you really enjoy, be it walking, swimming, bike riding, jogging, tennis, or aerobic dance. Exercise also helps relieve stress and tension. Use relaxation, stress reduction, and meditation techniques to rid yourself of the stress you may have tried to mask first with smoking and then with eating. This may help you get to the source of both problems. Even if you do gain some weight after quitting smoking, if you follow these tips, especially exercise, you'll probably lose those pounds within a few months without smoking again.