Generally the people acquire this habit in their teen-age and find it fashionable. As is normal during adolescence one learns it from friends and don't care about its results. They become victim of a common illusion that smoking is a sign of being grown up.

Another common illusion is that it is a sign of male behavior. You can think that this illusion is decades old because only boys used to smoke and girls, barring exceptions, did not like to smoke. This is no longer the case as now many young girls too have started smoking.

In the beginning it is not realized that smoking is addictive. while it is possible, else as usual with all addictive things their use makes one more vulnerable. The ?kick? or pleasure is transient and one feels the craving of it again and again. After some time you need more of it to get the same sensation. This is the point when a habit becomes an addiction. It is not the act of smoking that makes you crave, it is nicotine which is the addictive substance in tobacco smoking.

Like all other addictions one finds difficult. If the craving of a smoke is not fulfilled the person is unable to concentrate on work, feels indifferent and out of form. His/her performance too suffers. Hence, for quitting smoking it is necessary to consult some physician or those who have quitted this habit.