This is Cal Newport’s investigation of what it takes to be so good at your job, that you can’t be ignored. Unlike many online personalities, he doesn’t tell you to follow your passion, in fact he feels it leads to a life of disappointment as you continue to fail to find the “right” career and thus never feel the fulfillment you’re told to expect.
Instead of passion Newport tells us we need to buckle down and focus on the things that matter in our job then do those things well. Continue to do them well, and stick with your career. On the other side emerges an expert in their field, and often someone that does enjoy what they do because enjoyment comes after all the hard work required to be an expert.