Answer:
An important lesson that boxing can teach boxers about life is that it is important to insist on a challenge until it is over, only then is it possible to win it.
Explanation:
Boxing is a difficult fight and a great challenge to be completed, especially when it seems that the challenge is winning an individual who apparently is unable to win. However, boxer is a sport that is only possible to really know who is the winner in the end, for this reason, it is necessary that the fighters insist on ending the fight, even if injured and even if it seems that they will not succeed, because the destiny may surprise you.