Resentment kills a fool, and envy slays the simple. Job 5:2 (NIV)
In reality, the opposite is true. Resentment kills! I have found that the person that can make me angry controls me. The same is true in your life. The only way to find peace is through forgiveness. Forgiveness doesn't condone the behavior, or mean that you pretend that what happened to you was ok. It does mean that you are forfeit your right to be angry at others. Your forgiveness releases those that have hurt you from condemnation; and it releases your soul from damaging hurt. If you don't release the people that have hurt you, you will begin to resemble them.
Practice forgiveness this week. After all, Jesus has forgiven you!