David J. Schwartz was an American motivational writer and coach, best known for his classic self-help book, "The Magic of Thinking Big," first published in 1959. Born on March 23, 1927, and passing away on December 6, 1987, Schwartz was a proponent of the power of positive thinking and setting high goals. As a professor of marketing at Georgia State University and a life strategist, he specialized in developing methods for personal and professional development. His work emphasized the importance of belief in oneself, the power of setting ambitious goals, and the importance of a positive attitude in achieving success. Through his books, lectures, and seminars, Schwartz influenced many individuals to pursue and achieve their personal and professional aspirations.