I ran across this fantastic article and have pulled out below some of my favorite passages. I highly encourage you to follow the link and keep reading, this article is well written, easy to relate to and relevant for any reader.
Self-knowledge: The most moving (and enduring) books you collect are those that become a mirror. This mirror is placed in front of you when you read something that has you nodding along and thinking, yes, that is how it is. You just found a part of yourself.
Presence: Reading helps you remain calm. It's as therapeutic as anything else. Once you start digging into a book that's caught your attention, time ceases to exist, your mind is completely immersed in what is in front of you.
Joy: Reading is a pleasure -- it ought to be. Nobody has any time to read books you don't like. Life is too short to read books that don't bring you joy, or worse, that don't matter at all. Read what enriches your life, and your life will change because of it.
Books can be powerful tools, what is one of your most memorable ways that a book has helped you grow or change. Share your feelings in the comments below.