Show more empathy

When you see someone make a big mistake, you may think, "Well, that's what they get." or "I've been there; it will help them toughen up." Those reactions are unhelpful. They don't do anything for the person who's suffering nor for your relationship with them.

In contrast, using the rule of the chess player helps you to realise that you would make the same mistakes if you were in similar circumstances. Your default changes from "judgmental" to "helpful", which can strengthen your connections with others.