Always be joyful, no matter what you are. With happiness you can give a person life. Every day we must deliberately induce in ourselves a buoyant, exuberant attitude toward life. In this manner, we gradually become receptive to the subtle mysteries around us. And if no inspired moments come, we should act as though we have them anyway. If you have no enthusiasm, put up a front. Act enthusiastic, and the feeling will become genuine.
–

Rabbi Nachman of Bratslau 1772- 1810), Founder of the Breslov Hasidic movement.