With your words you have the power to lift people up and inspire them towards love. You also have the power to put them down. When you believe the words of another you are using your power to create your own emotional suffering. When we are children we do not learn how to use this power. By the time we are teenagers we use our words out of habit and do not know what we do.
You have the power to create happiness through the expression of love and truth. You also have the power to create emotional suffering in your self, and in others depending on how you use your word. When you hurt your self or another there is a way to ease and heal that suffering in your self and in another. That way is forgiveness.