You are thinking about it. Don't make any firm plans yet. Don't throw your cigarettes away. Don't hide the ashtrays. Above all, don't tell anyone.
Smoking is a very personal thing.
Face the fact realistically that it is your problem, no one else's. The honest truth is that no one really cares whether you quit or not. Aside from close family members, no one would probably notice if you quit right now. People have their own problems, your smoking is not one of them. The day you decided to control your smoking, the hour you started your program, how you suffered, the method you used, will be of little interest to anyone but yourself.