If you haven't seen it, here's an interview from the Today Show with Laura Hillenbrand, the author to Seabiscuit and Unbroken. She also has ME/CFS.
The interview is mostly about Louis Zamperini, the subject of Unbroken. But Hillenbrand also discusses writing the book while battling ME/CFS. Later, Zamperini mentions that he gave her his Purple Heart medal in recognition of her struggles with ME/CFS.
By the way, Unbroken happens to be one of my favorite books. I read it before I came down with ME. Regardless of what type of book you normally read, chances are you'll like Unbroken. At it's core, it's a story about not giving up hope when you're faced with a difficult situation--something most PWMEs can relate to.
The interview can be watched here.