" When you allow what someone says or does to upset you, you’re allowing that person to control you. When you say, “You make me so mad,” what you’re really doing is admitting that you’re giving away your power. As long as the person knows they can push this button and you’ll respond this way, and they can make that remark and you’ll get upset, and they know if they go outside you’ll go inside—as long as you keep responding the same way—you are giving them exactly what they want.
People have a right to say what they want, to do what they want, as long as it’s legal. And we have a right to not be offended. We have a right to overlook it. But when we become upset and angry, we change. If somebody walks into a room and we grow tense, it’s because we’re putting too much importance on what that person thinks about us.
What a person says about you does not define who you are. His or her opinion of you does not determine your self-worth. Let that bounce off you like water off a duck’s back. This person has every right to have an opinion, and you have every right to ignore it.
I’ve found that some people feel it’s their calling in life to point out what others are doing wrong and where others are missing it. They’re constantly critical, always finding fault. There is nothing they love more than keeping someone upset, and arguing, and always on the defensive.
Rise above that. You don’t need them to agree with you. You don’t have to win their approval. Let that go, and just be who God made you to be. "

― Joel Osteen , Every Day a Friday: How to Be Happier 7 Days a Week