Do you need a round tuit to write a non-fiction book ?

I want to write a non-fiction book. Shortly after Christmas I was all excited, knew what it was about, and even had a plan to build it up, chapter by chapter, idea by idea. I'd written myself a nice little schedule, detailing how soon I'd have just enough planned and tested, on all those wonderful beta-testing reading who must surely be out there, eagerly awaiting my next inspiring thought. Then...

I'm honestly not sure what happened then. Time ran off without me perhaps. I slipped into a time...