"Secrets of the Millionaire Mind: Mastering the Inner Game of Wealth" by T. Harv Eker is a book that delves into the mindset and psychology of successful millionaires. It explores the beliefs, attitudes, and habits that differentiate wealthy individuals from those who struggle financially. The book provides insights and strategies to help readers develop a millionaire mindset and overcome limiting beliefs about money. It offers practical advice on how to manage money, create wealth, and achieve financial success.