Ancient poems about introspection

1, it's good to know your mistakes and correct them.

2, sit still and think about yourself, don't talk about people when you are free.

Sometimes there must be something in life, and there is no need to force it in life.

4. Advice when unpleasant is helpful for action, and good medicine when bitter is beneficial for illness.

5, it is not too late to see a rabbit love a dog; It is never too late to mend.