Drawing from current research in psychology, the social sciences, and spirituality, this book presents a comprehensive investigation into the heart of gratitude as it arises within lived experience and its role in nurturing relationships.  It explores the range and depth of the emotion experience of gratitude and identifies its relationship with other indicators of wellbeing. New research by the authors reveals gratitude as a feature of transcendence and its connection to higher order experience including spirituality and religion. This book explores the potential for cultivating gratitude as a transformative practice for personal growth, enhancing relationships, and spiritual development.