Sadly I still smoke, but I roll my own now as cigarettes in England cost a small fortune ! But I have cut down by doing it this way and save money, but I know it's no good for me, but I don't drink so that is one consolation.
My brother quit cold turkey over 25 years ago. That is one habit that I never did because I knew what was put on tobacco due to my parents raising it. Tobacco did pay for my college education.