Jordan Peterson, The Tim Ferriss Show
Consult Your Resentment
Notice your resentment and decide if a boundary is crossed or you need to grow up.
Jordan Peterson says
Resentment is a bad emotion but it is useful, you can learn a lot by noticing that it occurs. It tells you one of two things, either someone is treading on your territory and something needs to be done about it, or you need to grow the hell up and stop complaining. It is not always obvious which of those it is, but you need to figure it out. You can harbor resentment for unlived life for a very long time, and all it does is corrupt you, it hurts you physically because it is a stressful emotion.
Try this
Next time you feel resentment, ask whether someone is crossing a boundary or whether you need to grow past it, and act on the answer.