I'm typically very comfortable writing contemporary. You know, write what you know? But recently, I tried co-writing a historical fiction piece with my friend Ansha Kotyk. Writing with a friend rocked!! Let me tell you, it was invigorating to have someone to bounce ideas off of, help balance the research, and just get excited about the story.
I've never written historical fiction, but it was awesome! We wrote a little over 7000 words in less than a week. I would never have thought that possible!
Write outside your comfort zone. Think outside the box (unless, you're a cat ). Give it a try!