The document discusses the history and development of sports psychology from ancient times to the present. It notes that concepts related to being "in the zone" have existed for centuries in ancient philosophies. Early formal research began in the late 19th century with studies on factors like reaction time in athletes. The first sports psychology book and university course emerged in the 1920s. Since then, the field has grown to include extensive research, teaching, and practice of sports psychology consultation to optimize athletic performance.