" When you are feeling upset, angry, or sad,” Epictetus said, “don’t blame another for your state of mind. Your condition is the result of your own opinions and interpretations. . . . “When anyone provokes you, remember that it is actually your own opinion provoking you. It is not the person who insults or attacks you who torments your mind, but the view you take of these things. "
― Epictetus , The Manual: A Philosopher's Guide to Life (Stoic Philosophy Book 1)