So you learned your lesson and you've made sure to devote a significant portion of your resources to getting your revenge? There's a difference between not let

So you learned your lesson and you've made sure to devote a significant portion of your resources to getting your revenge? There's a difference between not letting someone take advantage of you and spending significant time repaying every perceived slight 10 fold. Even iterative prisoners dilemma shows that without forgiveness a tit for tat strategy dissolves into an endless cycle of vengeance.