KISS YOUR BUTT GOODBYE. Lighting up is just about the worst thing you can do to your breathing and your body. Which is why it’s so critical for smokers–with or without symptoms of lung disease–to quit. Of course, learning to live without tobacco is no easy task. If you’re wondering how to break the mental and physical addiction, we have practical tools and resources that can help. Learn more about how to stop smoking plus the many effective medications and smoking cessation programs that work.