** spoiler alert **
I read this book and Ann Patchett's Truth and Beauty with my book group, and I have to say my opinion of this book changed after reading Patchett's book. The beginning of Grealy's book is extremely compelling - she creates some truly gripping prose in her descriptions of her cancer treatments as a child, and her thoughts about her relationships with her parents are emotional. But the latter half of the book seems less reflective and more repetitive. Perhaps this is because her adult years were more recent and she had less time to reflect, but Patchett provided another reason: this part was written quickly to meet a deadline. It certainly reads this way.
Even though my opinion of Grealy's book went down a notch after reading Truth and Beauty, I would still definitely recommend reading the two together.