I've probably only said that fifteen hundred times, I started saying it to my daughter when she was two or three. I've recently started saying it a lot to myself.
When you start on a task, is it helpful or hurtful?
How about how you are thinking about that thing?
What you are eating?
The people you are surrounding yourself with?
Twice in the last week people told me they were being helpful why they were actively hurting what I was working on. It is a simple question, because sometimes it's not as big of a deal as whether it is right or wrong, but it's still a pretty big deal.