Learn the feeling you get right before a bad decision. Treat it like a yellow light.

Bad choices tend to have a signature, and it shows up a moment before the choice itself. For some people it is a hot rush, for others a strange calm, a sudden sense of not caring, or a quiet thought that nobody will know. The feeling arrives early enough to be useful, which is the whole opportunity.

Think back to your last three regrets and look for what they had in common just beforehand. Name it. Then agree with yourself now that when it turns up, you slow down for sixty seconds before deciding anything.