Why is quitting from smoking so tough?

Smoking initiates many processes in the body. As nicotine enters, the endorphin is released and you are actually becoming high. Yes these are sort of drugs which have obvious symptoms like becoming anxious, sweating and feeling of physical illness on removal. But you can easily give-up this habit. I found a good e-book on “Smoking Cessation” (http://www.stop-smoking-guru.com). Concerning cigarettes being cool, I don’t agree with you. What I feel is that some great personalities fall victim to this habit making it look cool which is surely a myth.