The third edition of Positive Psychology is an accessible introduction to this rapidly growing field. It covers all major positive psychology topics including wellbeing, character strengths, optimism, gratitude, savouring, flow, mindfulness, emotional intelligence, creativity, giftedness, wisdom, growth mindset, grit, self-esteem, self-efficacy, adaptive defence mechanisms, functional coping strategies, positive relationships, and positive psychology interventions. Positive Psychology retains all of the features that made previous editions so popular, including: • Learning objectives • Accounts of major theories • Reviews of relevant research • Self-assessment questionnaires • Self-development exercises • Chapter summaries • Key term definitions • Research questions for student projects • Essay questions for student assignments • Personal development questions for student exercises • Relevant web material • Further reading This new edition has been completely updated to take account of the exponential growth of research in the field. It will prove a valuable resource for students and faculty in psychology and related disciplines including social work, nursing, teaching, counselling, and psychotherapy. This edition also provides access to online teaching resources at https://www.ucd.ie/psychology/resources/positive_psychology_carr/.