Never ever let anyone disturbs your sanity.
When we hate our enemies and constantly recalls what they said. we are actually giving them power over us: power over our sleep, our appetites, our blood pressure, our health, and our happiness.
Even if we can't love our enemies let's at least love our selves. We may not be saintly enough to love our enemies, but for the sake of our own health and happiness, let's at least try to forgive and forget them.