WEB DuBois in a letter to his daughter, Yolande:

Don’t shrink from new experiences and custom. Take the cold bath bravely. Enter into the spirit of your big bed-room. Enjoy what is and not pine for what is not. Read some good, heavy, serious books just for discipline: Take yourself in hand and master yourself. Make yourself do unpleasant things, so as to gain the upper hand of your soul.

From Letters of Note