Little slights, harsh or unthinking words that sting and hurt, something said or done that has left wounded feelings are not that hard to forgive. No one is perfect and all of us, at one time or another, have done these things without even realizing it. Develop an attitude of constant acceptance and forgiveness as you go about daily life, shrugging off these little things in the realization that only your own attitude is bringing the distress you are feeling about them. Forgive yourself first for getting upset: then forgive the other person – entirely. To really erase the memory, think of something nice about that person and send out vibrations of concern and affection instead. If the person really meant to hurt you, this is entirely disarming! Love conquers all.
God is the friend of silence. See how nature -- trees, flowers, grass -- grow in silence; see the stars, the moon, the sun, how they move in silence... The more we receive in silent prayer, the more we can give in our active life. We need silence to be able to touch souls. The essential thing is not what we say, but what God says to us and through us. All our words will be useless unless they come from within.