Does it make me a coward to walk away and move on when I've been wronged by people?

I could get revenge on them all, but I'm so tired. They deserve it and I have what I need to teach them a lesson messing with the wrong person; I want to get revenge and then start fresh leaving them in the trash where they belong...but idk why im hesitating. I just feel wrong inside thinking of what I'm going to do but I cant just let them get away with what they did to me. Part of me wants to stand up for myself and make them regret messing with me but the other part thinks me walking away, building my peace again, and showing they don't affect me is more effective