You spend about 80,000 hours of your life working. Bill Gurley, the investor behind Uber, Zillow and Grubhub, thinks too many people follow the career path someone else chose instead of doing work they love.

You spend about 80,000 hours of your life working. Bill Gurley, the investor behind Uber, Zillow and Grubhub, thinks too many people follow the career path someone else chose instead of doing work they love.