Dr. Norman Vincent Peale was an American minister, author, and motivational speaker best known for his influential book The Power of Positive Thinking. A pioneer in the field of self-help and motivational literature, he emphasized optimism, faith, and confidence as keys to overcoming obstacles and achieving success. Through his sermons, books, and public talks, Peale inspired millions to adopt a mindset of resilience and possibility, leaving a lasting impact on the personal growth and self-improvement movement.