I never got into the smoking thing-but I have heard that some people try to chew bubble gum(maybe a flavor like watermelon) for 2 months and this may work. The physical withdrawal for most people lasts a week, but I think its the psychological things people have to deal with after that time, that could be a problem ? A lot of people cannot deal with the taste of nicotine lozenges or gum-also you could replace smoking with something like running as well.