How Do I Do It?

I really don't know how "I," the human being Jonathan Mayhew, is able to turn into "I," the scholarly writer of the same name. I really don't know how I do it. I've often gotten into trouble assuming someone else can do what I can. I can easily imagine myself not being able to do it, or losing the ability to do it at some point. When I'm sitting here not writing, the ability to write a book seems almost as improbable as being able to mount a flying trapeze.