I’ve seen people talk about actors and artists that had a terrible time.
My own would be Anne Rice. She wrote Interview with the Vampire after her young daughter died of Leukemia. Then her husband suddenly died of a brain hemorrhage. I suspect her Christian, anti-fanfic phase was a result of mental illness and manipulation from the publishers, although I don’t think she ever apologized.
The snti-fanfic thing isn’t a result of mental illness, it’s the result of fanfic being terrible. Also, it’s like she said "I hope you’ll be inspired to write your own stories with your own characters.”
Also, Tolkein, because him and I ended up on similar paths irt war, and dealing with that is a giant fucking mess.