The effects of nicotine on the body are one reason why it is so difficult to quit smoking. People become physically dependent on nicotine, and when they try to quit, they experience unpleasant withdrawal symptoms. One way they try to relieve these symptoms is to take up smoking again. However, the addictiveness of nicotine is not the only reason why quitting smoking is difficult. Cigarette smokers may smoke to regulate their moods or deal with stress. In this way they are psychologically dependent on tobacco. In addition, tobacco users tend to connect certain behaviors with smoking. To quit successfully, they need to change their behavior. While medications such as nicotine gum and skin patches can help smokers and nicotine addicts deal with their physical addiction to nicotine, behavioral approaches can help them to change certain behaviors that go along with smoking. The...