This is an interesting question to me, because I've read lots of books over my life and I don't really think I can say a book has 'completely' changed my life.

This is an interesting question to me, because I've read lots of books over my life and I don't really think I can say a book has 'completely' changed my life. However, I've read books with interesting ideas that I've probably applied in my life to varying degrees, which I guess one could say has changed my life to some extent. If that's the criterion, then there are probably too many to list. Since I'm likely being over-analytical, if I had to recommend one book to read it'd be something like 'James and the Giant Peach' or another book that would sufficiently open one's imagination.