I thought "Seabiscuit" by Laura Hillenbrand was a great book. I had no idea she researched and wrote it while ill with chronic fatigue syndrome. And now she's published another book -- still while fighting the disease that all but confines her to her home. This is a great piece on her, how she researched and wrote "Unbroken," and how she and her husband have stayed together despite her illness.
And she's an inspiration to anyone who wants to write (or do anything, really) and thinks they're too tired to keep going.