The book "How to Measure a Life" is written by the Harvard Business School professor Clayton Christensen, whom I myself had the pleasure of when he visited Copenhagen and who has written something so rare and unique as a book which conveys how business strategy and thinking relates to obtaining a happy life; one where you also "invest" in family and friends eventhough such an investment, according to him, does not result in the same short-term "hit" as a solid financial investment or other top performance realated to your job.
A really fine and important book!