Every once in a while, I get an email that brings me nearly uncontrollable joy. Richard, you’ve just sent me one of those emails. And in return for the gift you gave me, I’m going to give you an ...

I’ve been using planners for almost a decade now. My planner was like my best friend. It knew where I went, when I went, and who I went with. It knew my schedule—that I had a long exam on Tuesday, a ...