Perfection of character: to live your last day, every day, without frenzy, or sloth, or pretense.
And consider this which is near to thee, this boundless abyss of the past and of the future in which all things disappear. How then is he not a fool who is puffed up with such things or plagued about them and makes himself miserable? for they vex him only for a time, and a short time.
Which is recorded of Socrates, that he was able both to abstain from, and to enjoy, those things which many are too weak to abstain from, and cannot enjoy without excess. But to be strong enough both to bear the one and to be sober in the other is the mark of a man who has a perfect and invincible soul.
It is not the actions of others which trouble us (for those actions are controlled by their governing part), but rather it is our own judgments. Therefore remove those judgments and resolve to let go of your anger, and it will already be gone. How do you let go? By realizing that such actions are not shameful to you.