Hopefully, you've realized which people, emotions, and situations would be most likely to tempt you to smoke again. Be prepared to meet these triggers head on and counter-act them. They'll love being around you even more now, since you've stopped smoking. Put something other than a cigarette in your mouth. Chew sugarless gum or nibble on a carrot or celery stick.
Swizzle sticks are helpful to many for the hand to mouth movement.
Avoid places where smoking is permitted. Sit in the nonsmoking section of restaurants, trains, and planes. Eliminate or reduce your consumption of alcohol, which often stimulates the desire to smoke and relaxes your inhibitions. Try to have no more than one or two drinks at a party. Better yet, have a glass of juice, soda, or mineral water.