How do you see things, through the world's view or a Biblical viewpoint? Have you ever had somebody do something to you that really hurt or annoyed you? How did you respond? The world says "don't get mad, get even." Most times when someone has wronged us, our natural instinct is to strike back. Either immediately, or after some careful planning for the perfect counterattack.
Satan loves to see people fighting, and it doesn't matter what it's about. If the devil can keep us at odds with one another, it distracts us from what really matters in life, and we won't be focused on what he's planning or doing.
God, however, has a different approach for dealing offenders and retribution. The Bible says to "avenge not yourselves...for it is written, 'Vengeance is mine, I will repay, saith the Lord.'" (Rom 12:19) God will always have the perfect punishment to fit the crime, whether it's now, or in the future. He's been doing it a lot longer than we have, so let God be in control of doling out justice.
Take time today to pray and ask God to help you take control of your "I'll get even with you" attitude.