Lao Tzu was satisfied with the answer and said, "He who knows others is wise, and he who knows himself is clear." In other words, if people want to be wise and knowledgeable, they must know themselves and know each other. You have the initiative in what you do and who you deal with. Before you do things, you should fully understand yourself and don't rely on others. In this way, our mentality will be correct, our psychology will be balanced and we will face success and failure calmly. People, in society, cannot do without the environment. Some people say that people live in a net. However, in this web of life, nine times out of ten people are not satisfied. At birth, people can't choose their parents. Parents are unique, and their status may make you dissatisfied. When you are a student, your class and teachers may be unsatisfactory; At work, your company and your position may be unsatisfactory; When you have a family, your family may not be completely happy ... leading to a low status and insufficient economy. We blame our parents for their incompetence; Our study is not ideal, our grades are not outstanding, and we hate the teacher's imbecility. The unit is not satisfactory, the work is not smooth, and we sigh that it is not timely; The family is unhappy, the children fail to live up to expectations, we hate bad partners ... we complain and complain. When successful, people often claim to be capable; When failing, people often say that the environment is helpless. The reason is that I dare not face the reality, face life squarely, or even dissect myself. Gou Jian, the King of Yue, recognized himself clearly, didn't complain about others, started from himself, publicly criticized himself, got up wherever he fell, saved up for ten years, and finally got revenge. If Gou Jian, who was living in Huiji at that time, hated his father for hating Wu and his country for being small and incompetent, he might give up on himself and be a slave to Wu all his life, and he would never have the glory of making a comeback. Coachable, king of Qi, knew that he had defeated the imperial court; Li Shimin accepted Wei Zhi, recognized himself, and was ruled by Guan Zhen ... The reason why ancient famous kings were wise and immortal was that they had self-knowledge, dared to accept their own shortcomings, learned from each other's strong points, and dared to take on their own responsibilities. Most successful people in ancient and modern China and abroad have this quality, and most people are losing themselves. In the face of complicated life, how can we have a calm? The key is to know yourself-your own quality, your own ability and your own position. Know "who am I?" When something happens, I often think from myself: what is missing, what should I do; What belongs to your own category and what you can't reach. In this way, we may shorten the distance from success, and we will not be frustrated for life. Based on this, we may be able to reduce blind comparison, eliminate unbalanced mentality and be a "contented person". Let's fight for a happy life and find ourselves again. As the saying goes, "Good people blame themselves, while bad people blame others." Let's be a "hero", take responsibility for ourselves, and make ourselves people who know Meiji!