Lo! I Teach You The Superman:
What is the greatest thing ye can experience? It is the hour of great contempt. The hour in which even your happiness becometh loathsome unto you, and so also your reason and virtue. 
I love him who is ashamed when the dice fall in his favour, and who then asketh: “Am I a dishonest player?”—for he is willing to succumb. 
No small art is it to sleep: it is necessary for that purpose to keep awake all day.

Ten times a day must thou overcome thyself: that causeth wholesome weariness, and is poppy to the soul. 
Ten times must thou reconcile again with thyself; for overcoming is bitterness, and badly sleep the unreconciled. 
Ten truths must thou find during the day; otherwise wilt thou seek truth during the night, and thy soul will have been hungry. 
Ten times must thou laugh during the day, and be cheerful; otherwise thy stomach, the father of affliction, will disturb thee in the night. 