What keeps us from forgiving the people who hurt us is that we have not yet healed the wounds they inflicted. Forgiveness is the gift at the end of the healing process. We find it waiting for us when we reach a point where we stop expecting "them" to pay for what they did or make it up to us in some way. Yet, forgiveness is moving on. It is recognizing that we have better things to do with our life and then doing them.
To be at peace with myself means to accept myself the way I am; to reduce the split that is created by the image of what I would like to be and who I really am; to be patient with myself, especially in regard to what conflicts with my idealized self.