Competently executed and reasonably engaging, but the nods to people in life situations different from the authors are just that - nods. Well. I say "nod." I probably mean "slightly uncomfortable head jerks when you see your boss in the mall with a much younger girlfriend who's not his wife." If you're not (straight and) married, with kids, (probably Christian), and middle/upper middle class, well, good luck with that, 'cause you're pretty much on your own with that.
The basic concepts: spend a week diligently tracking how much time you actually
spend on things, figure out things you actually want to be doing with life, and adjust accordingly to prioritize things that get you further towards doing what you actually want. Pretty straightforward.