I Wonder

I just briefly skimmed on article on google news about a new book out by Melvyn Bragg about Books that Changed the World. As I said, I only skimmed it, it was a little too serious for me (maybe it just the way the article was written?) and I was just wondering what my list of books that changed MY life would be. I can remember favourites growing up, but I can't pinpoint a specific book that altered me as a person. But then maybe I need to think about it for longer than it's taken me to write this :) What about everyone else?