New in paperback. Hardcover was published in 2023. This handbook examines contemporary issues in self-compassion science and practice. It describes advances in the conceptualization and measurement of self-compassion as well as current evidence from cross-sectional and experimental research. The volume addresses the foundational issues of self-compassion, including its relationship to self-esteem and mindfulness. In addition, it considers the developmental origins of self-compassion and its relevance across the life course, including among adolescents and older adults.