How to write the inspiration and insights of "Sleeping on Firewood and Tasting Guts"?

Enlightenment: In order to remember his past, King Gou Jian of Yue finally made a comeback and destroyed Wu in one fell swoop, which just confirms the view that one is born in sorrow and dies in happiness.

Enlightenment: Life is full of ups and downs, and nothing is easy. If a person wants to achieve something, there must be a certain amount of sacrifice and patience. If you can't put down your arrogance and persevere when patience is needed, you will only lose the chance of success. If you can be patient and let go, through continuous efforts, one day things will succeed.

Extended information:

In the story, Gou Jian is very perverted and licks it every day. I don’t know how many times he licks it, but it is certain that he licks it every day. It was extremely painful and made me feel extremely uncomfortable. After feeling uncomfortable, he told himself that all these sufferings were caused by King Wu and that he must take revenge.

Revenge can’t just be talk, it’s just licking gall, it also has to be done. So Goujian issued a series of laws to make people's lives better and better. The national power gradually became stronger and stronger, and later Wu was defeated and Gou Jian took revenge.