A few years ago Margaret Barrett received a copy of Give and Take, by Wharton professor Adam Grant, from a colleague at Intel Corporation. It changed her life. In her typical empathetic fashion, Barrett noticed a bookmark in the pages and suggested her colleague finish the book before lending it to her. But he handed it back with both hands, saying, “You have to read this.” When she did, she understood why. Suddenly, many of the dynamics in her personal and work lives became clear to her.