Mastering the Art of Human Relations — Timeless Principles for Building Meaningful Relationships and Achieving Personal and Professional Success Dale Carnegie’s “How to Win Friends and Influence People,” first published in 1936, is a timeless guide to understanding the nuances of human behavior and leveraging this understanding for personal and professional success. The book is based on Carnegie’s courses in self-improvement, salesmanship, corporate training, and interpersonal skills, and it…