I’m writing this very sentence while sitting in a so-called “body doubling” session. On an open Zoom screen are the friendly, if focused, faces of fellow writers. Cameras are on, audio is muted, and I know we’re all working on similar tasks. That’s because we’ve shared our to-do list in the chat. When the hour wraps up, we’ll celebrate what we’ve accomplished and move on with our days. Body doubling—a focus technique where friends, colleagues, …