"Whatever your mind can conceive and believe it can achieve." This is SIMPLE BUT VERY POWERFUL app, developed to help you Learn & Master the powerful principles of the Book "Think and Grow Rich" by Napoleon Hill. HOW IT WORKS! 1. Each day you open the app you get 5 Quiz. 2. Read slowly and select the most appropriate answer from 4 options 3. Score 80% or more for 21 consecutive days 4. As you begin using the app daily (preferably 2-3 times a day) you will start knowing and learning its pr