Another thing is that if someone has developed an undesirable habit people, as a rule, do not mention it to him. They are polite; they are kind. And so one goes on, and one believes that everything is all right because nobody says anything. Besides there are always many to welcome an undesirable habit. The one who has taken to drink will find many friends who will welcome him in their society, and the one who has formed a habit of gambling will also find sympathetic comrades to encourage him.