Reacting to the Reaction
If you step on a nail, it is natural to freak out. Your plans are cancelled, you can't walk anymore, will probably have to go through the treatment procedure, and it hurts like hell all at the same time. It's a horrible time to be alive.
But wait, there is a way to make it even worse. Contemplate on just how horrible the situation is. Build up on that, one step at a time. Why did it happen right now when you finally decided to move? Why did it happen only to you of all people? Why is it so painful? Did someone intentionally put that nail on the street for you? Is this the world we truly live in? Why you? What point is there to live in such a world?
All of that is very true and worth writing an essay about. But none of that removes the nail, asks a friend for help, treats the wound, helps figure what you will do with now freed up time.