The secret of happyness is to be master of yourself.
Whenever you reason that you cannot do without something, you have become its slave. The secret of happyness is to be master of yourself. Many of the things you shouldn't do, you want to do. But when you have cultivated the power to control your desire to do something, even though you are tempted to do it, you have self - mastery.
Man's outer behavior reflect his inner life. External luxuries cannot make soul happy,it is only by control of one's life that the soul experiences happiness and peace. Every morning when I get up, I make certain resolutions, and then throughout the day I mentally whip myself to be sure that I fulfill them. This develops great will power; and when I see all my resolutions carried out, I feel I am a conqueror. So practise self-control. If you don't, you will find yourself constantly carried away on the waves of emotion.