This book integrates theory and practice, and addresses the key principles of sport, exercise, and performance psychology. It reflects the broadening of sport psychology studies to encompass more widespread human performance research. Chapters address such essential concepts as the key principles of sport, exercise, and performance psychology, individual differences, identity development, individual differences associated with personality, motivation, self-efficacy, stress and coping, injury, decision making, job opportunities, and burnout in the context of human performance. Motivation is likely one of the most critical variables in determining one’s behaviors and ultimate success because it impels them to act or sit still. Self-efficacy is said to influence whether people are optimistic or pessimistic, the goals they select, and their willingness to persist in the face of failure. Stressors fall into one of three possible categories-bioecological, psychointrapersonal, and/or social. Bringing these topics to life are companion “Applying the Concepts” chapters demonstrating how these principles are directly applied in real-life situations. The text focuses on the core theories underpinning sport psychology. Interviews with researchers, coaches, athletes, and other individuals from performance-intensive professions vividly reinforce the book’s content. Additionally, the book contains insights on theories and research findings that students can apply to their own experience.