How to Win Friends & Influence People by Dale Carnegie is a timeless self-help classic that teaches practical strategies for improving communication, building strong relationships, and influencing others positively. Through principles like showing genuine interest, giving sincere praise, and handling disagreements with empathy, Carnegie guides readers on how to connect with people, inspire cooperation, and become more persuasive. This influential book remains essential for personal and professional success, offering timeless lessons on how to win trust, foster meaningful connections, and lead effectively.