One of the things that helped me quit was learning that a pack a day smoker does as much damage to their heart as someone 90 pounds over weight, and I couldn't get over the looming thought of: "You dumb bitch, you think you're better than those moocows because your body is shaped differently, but you're just as bad. Fuck you till you fix it."  That said, someone carrying like 200+lb? Jesus. No wonder they don't make it much past 40-ish.