Try not to react merely in the moment. Pull back from the situation. Take a wider view. Compose yourself.

Never say of anything I have lost it, only say that I have given it back.

Nothing outside the will can hinder or harm the will; it can only harm itself. If then we accept this, and, when things go amiss, are inclined to blame ourselves, remembering that judgment alone can disturb our peace and constancy, I swear to you by all the gods that we have made progress.

An ignorant person is inclined to blame others for his own misfortune. To blame oneself is proof of progress. But the wise man never has to blame another or himself.

Not things, but opinions about things, trouble men.

In life our first job is this, to divide and distinguish things into two categories: externals I cannot control, but the choices I make with regard to them I do control. Where will I find good and bad? In me, in my choices.

Don't be concerned who is watching you. The triumphs and merits of others belong to them - as do yours to you. Make the most of what you've got.