I have to examine myself three times in a day and my life is enlightened by the enlightenment of my life. Zengzi has a famous saying, which was included in the Analects of Confucius and has been talked about by people for more than 2,000 years. Moreover, the idiom "I have to examine myself three times every day" also comes from here. This sentence is: "I have to examine myself three times every day: Have I been unfaithful in my plans for others? Have I not believed in my friends? Have I not learned to pass them on?" The meaning of this sentence What it means is: Every day, I reflect on myself for three questions: When planning for others, do I do my best? When interacting with friends, do I treat them with sincerity? Do you insist on reviewing what you have learned before every day? When you are alive, you must know how to reflect. It is best to reflect every day and be clearly aware of your own gains and losses. Only in this way can you "learn from history" and avoid making the same mistake twice; Two of the contents of the three provinces involve foreign exchanges. One involves self-cultivation. This shows that in life, the proportion of external interactions is greater than the proportion of solitude and study. This also warns contemporary students that learning is important, but it is even more important to master social skills, understand how to be a person, and develop good character. This is the life insight that the Confucian saying "I should examine myself three times a day" gave me.