Barbara Ehrenreich brings the world of writing down from the clouds into the hard earth of reality. Her best advice: start small. For example:
“More to the point, most books don’t start as books. They evolve from humbler efforts such as magazine articles, doctoral dissertations, even op-eds or blogs. If you find yourself saying “I could write about a book about it,” start by writing something far shorter. If you can’t get that published — as an op-ed, for example — you’re not ready for a book. Correction: you may be ready, but an agent or editor isn’t going to pay much attention to an entirely unpublished writer.”