Consult Your Resentment
Peterson treats resentment as one of the most useful negative emotions because it is diagnostic. When you feel it, it is telling you one of exactly two things, and your job is to work out which. Either someone is genuinely treading on your territory and you need to do something about it, or you need to grow up and stop complaining. It is rarely obvious which one applies, but the answer is always actionable. Harbored resentment that you never decode just corrodes you, and because it is a stress emotion, it costs you physically. The reason this works is that resentment is data you already have and usually waste. Most people either swallow it or vent it. Peterson's move is to read it: treat the feeling as a pointer to a specific situation that needs either a boundary or a maturation.

