I've managed to write two novels. The first - Snow Demon - I formatted and published through Smashwords. It's in desperate need of a rewrite. I shall get to that beginning tomorrow.

The second - The Man with No Face, I published through Kindle, and after several starts and stops, managed to complete the formatting.

A lot of my publishing success has been in nonfiction. I wrote the sleep disorders topic on About.com for 8 years. I would love to write nonfiction, especially short reads, for Kindle. But what should I write about? What should my niche be?

Sleep disorders doesn't seem too popular. I've also written about prophecy, women's health and the paranormal.

Suggestions? One of these or something else entirely? I've spent hours pondering this when I'd rather be writing.