Knowing I would have a long (3 hr) drive returning from a book signing event, I checked out an audio book, Dr. Wayne Dyer's The Power of Intention. Though I had scanned the hardcopy some time ago, I found the audio book very powerful and insightful. I recommend this book if you're serious about becoming the best you can be. Dr. Dyer is often featured on PBS broadcasts, too, which is a good way to get acquainted with his style and beliefs.