I'd heard some excellent things about this book, or so I thought, but don't be fooled - this is not the full book, but only extracts of it remixes into a 40 day devotional.
I have to say, it was quite disappointing. I'm sure it's a fine book; if it hadn't been hyped up so much I probably would have liked it. Unfortunately it does come across a little brief and really more of a teaser for the full length version than a book in it's own right.
Good gift, maybe for someone who actually doesn't like reading but wants some help structuring their quiet time.
I'd give this book 4/10.