Stephen Lam/Getty Images
Sheryl Sandberg's "Lean In" is among the top sellers.
Even in a world where technology is taking over, books are an essential resource for people in business. DropBox CEO Drew Houston, for example, got a crash course in business and management by reading bestsellers across different Amazon categories.
We looked at this year's list of the 100 best-selling physical books on Amazon, and pulled out those about business, productivity, and the psychology of success. We ranked them by popularity and also included their overall ranking on Amazon's broader list.
Along with newcomers like Sheryl Sandberg's book "Lean In," some older and still beloved titles continue to fly off shelves.
Disclosure: Jeff Bezos is an investor in Business Insider through his personal investment company Bezos Expeditions.