Excellence is an art won by training and habituation. We do not act rightly because we have virtue or excellence, but rather we have those because we have acted rightly. We are what we repeatedly do. Excellence then is not an act but a habit.
Because one believes in oneself, one doesn’t try to convince others. Because one is content with oneself, one doesn’t need others’ approval. Because one accepts oneself, the whole world accepts him or her.