Those proficient praise no one, blame no one, and accuse no one. They say nothing concerning their self as being anybody or knowing anything. - Epictetus

You should be especially careful when associating with one of your former friends or acquaintances not to sink to their level; otherwise you will lose yourself. If you are troubled by the idea that ‘He’ll think I’m boring and won’t treat me the way he used to,’ remember that everything comes at a price. It isn’t possible to change your behavior and still be the same person you were before.

Don’t demand or expect that events happen as you would want them too. Accept events as they actually happen. That way, peace is possible

Since I can get greatness of soul and nobility from myself, why should I look to get a farm, or money, or some office, from you? I will not be so insensible of what I already own.