Dentists seem to me very orderly, businesslike people who appear to become somewhat bored with the routine of their work after a period of time. Perhaps I'm wrong.
Everything is fiction. You only have your own life to work with in the way that a biographer only has the letters and journals to work with.
People say writing is really hard. That's very unfair to those who are doing real jobs. People who work in the fields or fix roofs, engineers, or car mechanics. I think lying on your back working under an oily car, that's a job.