Myth: Quitting may be hard for other people, but I can do it any time I want to.
Fact: Nicotine is one of the most addictive substances on earth, and most people who try to quit cigarettes will have a hard time breaking its hold, according to the National Institute on Drug Abuse. The chemical goes directly from the lungs to the brain and stimulates the production of dopamine, a chemical that makes you feel happy.
