When we were little, we thought our bodies were who we are. When we grew up, we thought the thoughts in our heads were who we are. After we experienced life, we thought there were two selves in our heads. There was another self who was always fearful, angry, greedy, jealous, vain, lazy, and proud. He often argued with the other self. We began to feel anxious, internally consumed, irritable, and depressed. Many people spend most of their lives shrouded in this emotion. After meditation, sitting in meditation, spiritual training, and enlightenment, a third self will appear in our brains. This is the wise self, who will look down on the quarrels between the first two selves in the brain and calm them down. Identify what I can change and what I need to accept as unchangeable.