I quit cold turkey but I wasnt a big smoker to begin with, a pack would usually have last me close to 2 weeks.
Whenever I get the urge I try to chew on some gum or sunflower seeds. It worse when you fill up gas and have the urge. When I go in to pay I try to buy some sunflower seeds, slushy, sour patch kids... something that will occupy me for a little bit. Good luck, its tough.