The essence of life is a three-dimensional relationship diagram composed of man, man and nature, and man and himself. People are the center of this picture and interact with it. In this interactive relationship, people's egoism is the most obvious, which shows that people's habitual views on the surrounding environment are centered on their own needs, and this self is a wall around this person, so all relationships are manifested as themselves and my relationship with the outside world, and my real relationship with the outside world is self-isolated. Self has become a channel between me and the outside world. What happens outside is mapped to me. I judge myself and react to the outside world. That's what this sentence means. In fact, by extension, I just gave up myself, so that I can really establish a relationship with the outside world and live out the meaning of this sentence and live the real me.