This powerful set of 3 books includes Memory: How to Develop, Train and Use It, The Power of Your Subconscious Mind by Joseph Murphy, and Think and Grow Rich by Napoleon Hill.  These books help readers improve memory, build a strong mindset, and achieve success. Memory: How to Develop, Train and Use It teaches simple methods to improve concentration and brain power. The Power of Your Subconscious Mind explains how positive thinking and belief can change your life. Think and Grow Rich shares powerful success principles for achieving goals and building wealth.  Written in simple and clear English, this combo set is perfect for students, professionals, entrepreneurs, and anyone who wants to improve focus, confidence, and financial success.