Many (too many) years ago, at the beginning of my career in television production, I did a government-sponsored course of film and video production. It was how I got started, and I loved every minute of it. I wouldn’t be where I was today without that course, and I’ll talk about that more at some point in the future, but there was one really important lesson I learned in the first week, which has stuck with me to this day and applies across all fields.