Whenever you drop something by fight, it is never dropped. You can drop smoking by fighting, and then you will start doing something else which will become a substitute. You may start chewing gum, it is the same; You may start chewing pan, it is the same, there is no difference. You need something to do with your mouth - smoking, chewing, anything. When your mouth goes on working, you feel at ease because through the mouth tensions are released. So whenever a man feels tense he starts smoking.