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

Niccolò Machiavelli, Emmet Fox, Neville Goddard, Joseph Murphy, H.A. Lewis, William Walker Atkinson, Marcus Aurelius, George Matthew Adams, Harvey Hardman, Wallace D. Wattles, Elbert Hubbard, Dale Carnegie, George S. Clason, Orison Swett Marden, Émile Coué, F.W. Sears, Elizabeth Towne, Florence Scovel Shinn, James Allen, Ralph Waldo Trine, Charles Fillmore, Benjamin Franklin, Laozi, Earl Nightingale, Miyamoto Musashi, B.F. Austin, Charles F. Haanel, Sun Tzu, Kahlil Gibran, Napoleon Hill, Russell H. Conwell, P.T. Barnum, Geneviève Behrend