While there were a few good points and questions to consider, I felt this book (and most books on the subject of careers) are a bit too basic and not tailored enough to an individual's situation. It's hard to give career advice that just anyone can use. It's a good starting point.
There's one point I disagree with, and that was part of his definition of a great career:
"A career is great when it offers satisfying work, impact on the world, a dependable and adequate income, and personal freedom."
I read that to mean, "If you don't leave something behind to impact the world, your career was a waste", which I don't agree with. You can have a job that you enjoy, that provides you with the income you need/want, and personal freedom, without having to "impact the world". If someone's job doesn't "impact the world", but only impacts a few people (and temporarily), that doesn't mean it wasn't a great career - especially to the person doing the work. Yes, it left something behind for those few people, but eventually the impact will pass. I feel like it puts too much pressure on the reader to change their career to make it as meaningful to others as possible.
Maybe if I change the definition of world (meaning everyone on the planet) to MY world (everyone I know/my community), that would make it a bit easier to handle.