Over confidence, coupled with negligence, can lead to sad consequences. This is the case when a person is so sure of himself that he becomes careless about little things that may pose a threat. I'm thinking, for example, of a stuntman named Bobby Leach. In July, 1911, he went over Niagara Falls in a specially designed steel drum and lived to tell about it. Although he suffered minor injuries, he survived because he recognized the tremendous dangers involved in the feat, and because he had done everything he could to protect himself from harm.
Several years after that incident, while skipping down the street in New Zealand, Bobby Leach slipped on an orange peeling, fell, and badly fractured his leg. He was taken to a hospital where he later died of complications from that fall. He received a greater injury walking down the street than he sustained in going over Niagara. He was not prepared for danger in what he assumed to be a safe situation.