David J. Schwartz, PhD (1927–1987), was a renowned American motivational expert and professor of marketing at Georgia State University. He established his authority through his academic background and his seminal 1959 book, “The Magic of Thinking Big,” which has sold over six million copies. As a life strategist and consultant, he taught millions that success is determined not by intellect, but by the size of one’s thinking and the power of belief.
