If the aspirant is to remake himself effectively, he must begin by attacking the lower emotions. They must be killed and eliminated from his life-scene. So long as they dominate it, so long will experience yield poisonous fruits instead of health-giving ones. Every fresh situation will only give fresh life to his ego because those emotions will involve themselves in that situation and cause him to misread it. The first enemies, the hidden sources of his own difficulties, are within himself.
-- Notebooks Category 6: Emotions and Ethics > Chapter 3: Discipline Emotions > # 17