Adrianne Courters (who writes as A. Kiwi Courters) is an extreme example of how sometimes we write in order to overcome our own anxieties. According to the Alameda Sun, she started writing while recovering from a serious automobile accident. She says, “I was scared. Every time I looked in the mirror, I saw someone I didn't recognize. Between the pain and the painkillers, everything got kind of surreal."
Her appearance also scared her two young sons. She explains, "I tried to come up with stories that were scarier than my own situation, just to get out of that fear mode. And I tried to make it more comfortable for Skip and Neal. They think Mom's pretty cool now. I have more metal in my bones than (comic book and movie hero) Wolverine."
She is now free of the wheelchair and crutches but plans to continue writing as a sideline to her full-time job.
The article mentions where you can find her work: "Stalker of the Blood Red Sands" in Rage of the Behemoth, published Rouge Blades Entertainment June 1; "New Fish" in Cthulu Unbound 2, published by Permuted Press June 30; and "Duma of Valley Kifaru" in the October edition of Kaleidotrope magazine.
(for tips on how to overcome the seven main fears that can stop you from writing, see my book, Your Writing Coach, published by Nicholas Brealey and available from Amazon and other online and offline retailers--the fears and their solutions are covered in the first chapter.)