One of the problems with writing a book on decision-making is that people assume I’m not terrible at making decisions. As a result, they act surprised when it takes me 10 minutes to pick a sandwich or when I confess that I still get mild panic attacks when choosing floss at the drugstore. They believe that, just because I wrote about the prefrontal cortex, I’m somehow better able to wield mine. But that’s not necessarily the case: there’s an indefatigable gap between theory and life.  While it’s true that I’m no longer quite so indecisive — I don’t spend 30 minutes debating breakfast cereals i...