Smoking is a bad habit that will kill you. Everyone knows this and yet, about 1.3 billion people smoke worldwide. Quitting is difficult and anybody who has tried knows that all it takes to relapse is a split-second of losing resolve. I was once a smoker and have experienced this difficulty first hand. I tried my first cigarette as a rebellious act in college and it soon became a habit. I befriended more smokers and social smoking became customary. When my parents found out, they started keepi...