Hello, the meaning of this sentence is very clear, that is, to correct mistakes. There are many famous sayings about correcting mistakes, such as:

Recognizing your own shortcomings is equivalent to correcting more than half. -Lenin

Everyone makes mistakes, but only fools insist. -Cicero

It is difficult to change after knowing the criticism; It's hard to say good things, and it's hard to criticize. rash and blunt

Too many, everyone has seen it; What's more, people went belly-up. -Confucius

I do dissect others from time to time, but I dissect myself more ruthlessly. -Lu Xun