The hardest thing is to know yourself. -Greece

3. One can't live without criticism and self-criticism, so one can't make progress. Mao Zedong

Introspection is a mirror, which can clearly show our mistakes and give us a chance to correct them. Heine

It is a good way to make people reflect on themselves by learning from others and understanding the extraordinary. -Lu Xun

6. Introspection is the road to virtue and God. -Watt

7. There are many ethnic groups who are not complacent, always advancing and always have hope. There are many races of people who only complain, but don't reflect. Sad, sad! -Lu Xun

There are so many stars in the sky that you can't see the soot on your face. -Malaysia

9. The starting point of success is self-analysis and the secret of success is self-reflection. steve chen

10.9 Niu Yi should never cry roast meat, and its complacency will be overthrown. Looking at many things in ancient and modern times, from humble to luxurious. -Chen Yi

1 1. Those who don't learn from failure will have a long road to success. -Napoleon

12. Being exposed is a failure, but exposing yourself is a victory. Hugo

13. If I want to write my own history, I will write my mistakes. Zhou Enlai

14. I visit myself three times a day. -Confucius

15. It is never too late to correct mistakes. -Shakespeare