Punishment! You need to handle your emotions, if you are upset with someone you need to understand where you are coming from.
Understanding your emotions and handling them well, will enable you become a better person and function better than when you are trying to get back at someone.
Getting back at someone will lead to ego tussles rather than solution to the problem, it will take its toll on you in the long run. Harboring negative feelings and grudges undermines your health,
Emotions are for you to express your feelings, that means you are in charge of them, but when you let emotions take over, you get run down. Take care :)