NAMED ONE OF THE 100 MUST-READ BOOKS OF THE YEAR BY TIME MAGAZINE The first and only comprehensive examination of the universal but widely misunderstood practice of grudge-holding that will show you how to use grudges to be your happiest, most optimistic, and most forgiving self. Secretly, we all hold grudges, but most of us probably think we shouldn't, and many of us deny that we do. To bear a grudge is too negative,...