This book is amazing. I got it through PBS on the recommendation of a friend, and it is one of the best 'Christian living' books I own. The chapters are very practical and helpful. There is a lot of good, solid stuff in there, and even the things I already knew seemed fresh and new. I don't know how many times I've read this book since I got it, but I keep coming back to it. This book is invaluable if you are looking to develop the discipline of prayer.