If it is not seemly, do it not; if it is not true, speak it not.

Two tests, applied before rather than after, remove most of what people later regret. Would I be comfortable with this being seen, and is what I am about to say actually so. Nearly everything that goes wrong in conduct fails one of them, and almost always you knew at the time.

Run them on the small decisions, where they are cheap: the expense claim, the story improved in the telling, the message sent about someone rather than to them. Stopping at that scale is easy. It is also where the habit is built that holds when the stakes are higher.