Sha Er painted a portrait for himself, so that passers-by could judge whether it was like it or not. Finally, according to the judgment of passers-by, he proudly thought it was his own painting. His wife laughed at him: "Do you want to be judged when you paint yourself?" Sha Er just cares too much about other people's comments and ignores his own understanding of himself. Like Sha Er, we often care about others' opinions about ourselves and judge ourselves according to others' opinions, but we don't know that knowing ourselves mainly depends on ourselves.

Shakespeare once said, "There will be a thousand Hamlets in the eyes of a thousand people". This sentence is also very applicable in real life. Different people will have different views and opinions on us. This is why passers-by have different views on which painting is the most similar. The so-called "from the side of the ridge, it becomes a mountain peak, with different distances." Observing a person from different angles often leads to different views on this person. Just like different people look at different Hamlet from different angles. It can be inferred that different people will have different views on us. If you judge yourself completely according to other people's opinions, won't you get all kinds of answers? Therefore, we need to rely more on ourselves to know ourselves.

At first, everyone was a blank sheet of paper. As time goes by, our experiences gradually fill this blank sheet of paper, and the person who writes down our experiences on this sheet of paper is ourselves. Therefore, no one knows himself better than himself. Newton chose to drop out of school at the age of fourteen because of family changes, so his math foundation was very poor. Newton himself realized this, so he relearned the basic knowledge and basic formulas in a down-to-earth manner, laying a solid foundation for his tower of science.

If you know yourself correctly, you won't do things that are inconsistent with your abilities. Take Kuafu's pursuit of the sun as an example. Kuafu thought there was nothing he couldn't do, so he chased the sun, but he didn't catch up with it. He died of overwork. I can't know myself correctly, and I hurt myself as a result.

Of course, we can't know ourselves completely by ourselves, and others' evaluation of ourselves also plays a great role. Others are like a mirror, from which we can see our own shortcomings. Wei Zhi is a mirror of Emperor Taizong. From Wei Zhi, Emperor Taizong knew what he had done wrong and corrected it before he became the founder of the Tang Dynasty. After all, no one is perfect, and it is unrealistic to know yourself completely and correctly. So we need others' objective evaluation to improve our understanding of ourselves. Of course, other people's judgments can only play an auxiliary role in self-knowledge, and really knowing yourself depends more on yourself.

Some people say, "Only when you know yourself can you know life". I hope more people can know themselves by themselves, instead of seeking too much judgment from others.