David J. Schwartz

David Joseph Schwartz (1927–1987) was an American motivational writer, coach, and professor at Georgia State University, best known for his bestselling book The Magic of Thinking Big published in 1959.[1][3] He founded Creative Educational Services Inc., a consultancy firm specializing in leadership development and life strategy.[1][5] Schwartz became renowned for his self-help publications and work as a motivational speaker.[6]