This is one of the best-selling nonfiction business books of all time and a favorite of former President Bill Clinton.

Written by Stephen R. Covey, it was among the first tomes to introduce the "abundance" mindset (the idea that there's enough good stuff to go around for everyone). Its seven "self-evident" power points include empathic listening, being proactive and keeping your spiritual life balanced, all presented in a logical yet holistic, step-by-step manner. It's sold more than 25 million copies worldwide and its principles have been adopted by Fortune 500 CEOs, ambassadors and NFL stars.