you need to make peace with yourself

You cannot be a peacemaker if you don't feel peace with yourself. Every time you go into a self loathing or negative self talk you loose you ability to be at peace with yourself. Take moment to wrap yourself in a bright warm "blanket" of Gods light and peace, telling yourself that you are of God and therefore able to strive for the best that you can be and then sit in that warm peace as it washes over you. Then you will be able to exude peace to others.