It is a known fact that a person who practises the piano too zealously gets cramp in his hands, and a too diligent writer exposes himself to writer’s cramp. Dejected and downcast, the musician or author, just now so full of hope, must break off his work; in idleness he is exposed to many evil influences. From this example you should take warning. Fasting, obedience, self-discipline, watchfulness, prayer all make up the constituent parts necessary