<human>:  Show me the most popular leadership books
<bot>: The most popular leadership books include "The 7 Habits of Highly Effective People" by Stephen R. Covey, "Start with Why" by Simon Sinek, "Leaders Eat Last" by Simon Sinek, "Good to Great" by Jim Collins, "The 21 Irrefutable Laws of Leadership" by John C. Maxwell, and "Drive" by Daniel Pink.