These are the things I know about, and that's probably what I should stick to writing..
The Sherman Iron Mysteries have been my most successful recent books. They're about a reporter fighting crime, defending himself with guns, entangled with the court system, in Montana.
"Write what you know" is so well-known it's trite, but stereotypes exist for a reason. It's trite because it's true.
I love science fiction. I love military technothrillers. But I'm at my best when I stick to my own life experience. Lord, please help me keep that in mind when it comes time to start a new project!