In the newsroom, the most powerful person isn’t the reporter who writes the most words; it’s the Gatekeeper. It’s the editor who decides what makes the front page and what gets thrown in the bin. Without a gatekeeper, a newspaper is just a pile of random rumors. We have been taught that “open-mindedness” is a total virtue—that we should try everything, watch everything, and listen to everyone. But in an age of infinite content, an open mind without a filter is just a trash can. If you want to develop a unique “voice” or a meaningful life, you have to start saying “no” to the mediocre. 1. The “Dietary” Law…