What They Don't Teach You at Harvard Business School" by Mark H. McCormack is a practical guide to success in business. The book focuses on real-world skills and knowledge not typically taught in business school, such as networking, sales, leadership, and time management. McCormack shares his own experiences and stories from other successful business leaders to illustrate key points and provide actionable advice. He emphasizes the importance of building strong relationships, being adaptable and resilient, learning from failure, and staying focused and motivated. Written in an accessible and conversational style, the book provides valuable insights and lessons for anyone looking to build a successful career. It's a must-read for entrepreneurs, executives, and anyone looking to gain a competitive edge in the business world. McCormack's street-smart approach makes this book a valuable resource for achieving success.