I spend far too much time on airplanes. In 2018, I flew over 240,000 miles to work with startup founders in 31 countries. And being like most entrepreneurs, I have a never-ending list of things to be done: E-mails that need to be read and need a response. Proposals to review. Documents to write. Presentations to develop. The list goes on. And while I am sitting on the plane, I feel this overwhelming need to “do something productive!” But being productive (in a traditional se