Some people find it difficult to write. Some people find it difficult not to write. I really wish that I knew which I was.
My problem is that when I'm not writing, I desperately want to and think of all sorts of things that I would like to write. Whenever I sit down to the keyboard, they all seem to disappear on me. It would be really convenient if whichever part of me was responsible for conscious thought could make up its mind on the subject.