well there are nicotine patches you can buy, they helped a friend of mine. but i guess their effectivness depends on how long you have been smoking for.
how much do you go throught (packs a day 1/2,1/4, 1 pack or more. this is irrelevent but what brand do you use. do you like Big American or the Imported/Specialty brands such as Export A or Dunhills because they dont have added chemiclas that make you have a heaiver addiction. but to answer your question what worked for me was coffee the caffeene must have cancled out the nicatine not quite sure.