I am not quitting smoking but I am quitting soda! At one point recently i was drinking a 2 liter bottle of diet pepsi a day. So after finding out I have hypothyrodism and that was why I was so tired and drinking the soda for the caffeine I decided to quit, plus a friend told me about an article she read about how horrible aspirtame(sp?) is for you! I have made it passed the killer headaches, thank goodness!
Just remember it takes 21 days to make a habit! So hopefully your new habit will be not smoking!
As for tips, I have heard to drink water, play with a pen or find something to do when you have an urge! Good luck! May we both be successful with our goals!