When you "have" to do something your brain finds ways to make it easier. As far as accidents go it sometimes does not matter how safe you are if someone else is not. I am scared to death of heights. I have seen what happens when something goes wrong but I managed to jump out of the plane every time. My brain made it fun. It was a necessity of my job and the failed chute was always someone else. Could never happen to me. If the brain did not work this way, no one would ever drive to work or leave the house for that matter.