Dale Carnegie

(1888–1955) was an American writer and lecturer known for his influential work in personal development and communication skills. His book "How to Win Friends and Influence People" remains one of the best-selling self-help books of all time. Carnegie’s teachings focus on interpersonal skills, confidence, and effective communication. He believed that success depends largely on how well individuals relate to others. His courses and principles have helped millions improve their personal and professional relationships. Dale Carnegie’s legacy continues to shape modern self-help literature and leadership training worldwide.