30+ years, up to 3 packs a day, though for the last several years I was smoking Ultra Lights. In 1995, I finally decided I was fed up, talked with my doc and got a prescription for patches. Finished up the carton I had, then put a patch on. Stopped using the patches after about a week, and never smoked again. Topped out at about 290 before I joined a gym and then took up cycling, and am working my way down, slowly but surely.