There are several reasons why perseverance often leads to success. First of all, a man who has perseverance does not give up after a failure. He tries again and can, therefore, learn from his mistakes. Second, a persistent person is usually a hard worker, and hard work is an important ingredient in success. Last, with perseverance comes a certain amount of confidence — the confidence that one will eventually succeed.

　　For all of these reasons, I believe that perseverance is the most important characteristic to have. It is easily combined with other traits such as diligence and confidence to increase the chances of success. However, without perseverance, one's success may be more dependent on luck than anything else.