It is simply a habit and a routine, break the habits and routine and you can quit. The chemical addiction passes pretty darn quickly, the cravings and habits do not. No other way to quit other than cold turkey IMHO, I don't smoke but have friends and family that did. They tired everything, and only cold turkey worked. Also try to put down on paper and guesstimate how much money you have wasted over all of these years with those nasty ass things, that in itself should make you stop. My favorite Uncle died way too young, he smoked like a freight train and the cancer, emphysema and heart disease ate his entire body up till the end.