What do I understand from the fable "rhinoceros cures feet"

I understand that people will inevitably make mistakes in the process of growing up, but we must correct them in time, otherwise it will be a big mistake, and the consequences will be very serious, and it will be too late to regret.

Rhinoceroses inhabit open grasslands, savanna, shrubs or swamps, among which Sumatran rhinoceros can only be found in the depths of forests, and generally feed on shrubs and herbs.

Extended data:

This story is about a rhinoceros playing on the grass. He accidentally stepped on a stinger and hurt his foot, but he went to see doctor woodpecker. The woodpecker checked it and said to it, "You must cut off the pricked meat with a knife, or the toxin will not disappear." The rhinoceros was afraid of pain and walked away.

After a few days, the rhinoceros's feet were all swollen, and then its legs were swollen, making it difficult to walk. It had to go to Dr. Woodpecker again and ask for the meat to be cut off. The woodpecker checked it and said, "It's too late now. It is impossible to just cut off that piece of meat. You must cut off your leg, or you will die. " In order to survive, rhinos have to agree to cut off their legs.