Esther Smith has a book being released on 6/22/22 called A Still and Quiet Mind: Twelve Strategies for Changing Unwanted Thoughts. While the book addresses a general Christian audience, the issue of chronic illness' impact on unwanted thoughts is addressed through Esther's own experience with chronic illness and her professional experience as a counselor. Here's the Amazon link for the book: https://www.amazon.com/Still-Quiet-Mind-Strategies-Changing/dp/1629959219 and the Publisher link: https://www.prpbooks.com/book/a-still-and-quiet-mind

Esther's website is here:  ...