Avoid a negative approach to life. Why gaze down the sewers when there is loveliness all around us? One may find some fault in even the greatest masterpieces of art, music, and literature--But isn't it better to enjoy their charm and glory? Life has a bright side and a dark side, for the world of relativity is composed of light and shadows. If you permit your thoughts to dwell on evil, you yourself will become ugly. Look only for the good in everything, that you absorb the quality of beauty.
--Paramahansa Yogananda, Sayings of Paramahansa Yogananda