When I was about 14 or 15, and running in a pretty muddy cross country race, one of my shoes stuck in the mud and came off. Boy, was I wild. To think that I had trained hard for this race and didn't do up my shoelace tightly enough! I really got aggressive with myself, and I found myself starting to pass a lot of runners. As it turned out, I improved something like twenty places in that one race. But I never did get my shoe back.