I enjoyed it. The author was able to make it both funny and disturbing, and still remain candid about her experience as a teenage obsessive compulsive, with the perspective of sanity. I liked that just at the moment I started thinking, "Wow, this is getting to be too much," with all the repetetive hand washing and such, that was when she started hinting at her journey to relief.
I've been thinking lately about how most books have an covert way of explaining the overall plot, giving the reader a sense of where she is in the book by knowing where she is in the story. If that didn't make any sense, I'll give an example: In Devil in the Details, the initial scene is something about the beginning of Jenny's compulsion. This is not the introduction (which describes scrupulosity, the subset of OCD that is related to the practice of religious customs), but the initial scene. It tells us that this is the problem, and thereby hints that at the end, this problem will be solved. Of course, I've read too many Oprah books and watched too many soap operas, and so I don't always believe that the problem will be solved at the end of the book. But in this case, it is. Phew.
I wish I had more to say, but I'm a book and a half past it now, so I'm moving on.