failure and success. Failure is the mother of the success.
When I fail in my lessons, I tell myself to take it easy. I know that I will win next time.
However, many people do not want to admit having failed. So they always make the same mistake again and again.
If they could only admit themselves, that it is ok to make the mistakes. Then they could improve themselves and reach the success.
As the old saying goes, failure teaches the success. Success that comes after the failure is sweet.
We can realize this from the experience.