The Brother Lawrence Collection: Practice and Presence of God, Spiritual Maxims, The Life of Brother Lawrence
This book is amazing because it is so real. Brother Lawrence of the Resurrection had an astounding sense of peace in his spirit because he stayed focused on God and not on himself, even when he screwed up, which I find so hard to do. He was a humble man who knew who he was (and wasn't) in Christ, and he was content with that knowledge. What an inspiration.