The Sky is the Limit: The Art of Upgrading Your Life: 50 Classic Self Help Books Including.: Think and Grow Rich, The Way to Wealth, As A Man Thinketh, The Art of War, Acres of Diamonds and many more by George Matthew Adams, James Allen, Charles F. Haanel, Napoleon Hill, William Walker Atkinson, Marcus Aurelius, B. F Austin, P. T. Barnum, Genevieve Be Management & Leadership