Legendary venture capitalist John Doerr's revolutionary approach to goal-setting that grew tech giants like Google and is spreading across Silicon Valley to corporate America. You may have never heard of the biggest management secret common to the hottest tech firms: objectives and key results (OKRs). But you should pay attention now: Google's Eric Schmidt credits OKRs with 'changing the course of the company forever.'OKRs help companies and teams reach incredibly ambitious goals by ensuring tra