D. Carnegie Books

Dale Carnegie was a pioneer in self-improvement courses, focusing on enhancing interpersonal skills and salesmanship. His most famous work, the bestseller "How to Win Friends and Influence People," teaches how one can alter others' behavior by changing their own reactions. Carnegie's approach emphasized the power of positive communication and self-awareness to achieve success in both personal and professional life. His ideas continue to resonate today, inspiring individuals to build better relationships and foster personal growth.