To Epictetus, all external ...

To Epictetus, all external events are determined by fate, and are thus beyond our control, but we can accept whatever happens calmly and dispassionately. Individuals, however, are responsible for their own actions which they can examine and control through rigorous self-discipline. Suffering arises from trying to control what is uncontrollable, or from neglecting what is within our power. As part of the universal city that is the universe, human beings have a duty of care to all fellow humans. The person who followed these precepts would achieve happiness.
To Epictetus, all external events are determined by fate, and are thus beyond our control, but we can accept whatever happens calmly and dispassionately. Individuals, however, are responsible for their own actions which they can examine and control through rigorous self-discipline. Suffering arises from trying to control what is uncontrollable, or from neglecting what is within our power. As part of the universal city that is the universe, human beings have a duty of care to all fellow humans. The person who followed these precepts would achieve happiness.

Quotes from the same author

Men are disturbed not by things, but by the view which they take of them.
It is the nature of the wise to resist pleasures, but the foolish to be a slave to them.
Keep silence for the most part, and speak only when you must, and then briefly.
Know, first, who you are, and then adorn yourself accordingly.
We have two ears and one mouth so that we can listen twice as much as we speak.