We wouldn't be the people we are, make the choices we do--essentially, live the lives we lead--without the influence of our ancestors who lived before us. Like the monarch butterfly, which takes several generations to complete a migration that ensures the survival of future butterflies, we can live good lives to ensure the happiness of future generations. In her newest book, Allison DuBois explores the legacies we all leave--and shows us how her experiences with the other side have helped her to learn the secret to living a happy live while ensuring her children and grandchildren will too.