Who said "Some things are yours. Some aren't. Sort them first."?

Epictetus (c. 50–135 AD). Source: Enchiridion 1.

What is the original wording?

Of things some are in our power, and others are not (George Long, 1877). Translated by George Long, 1877.

Some things are yours. Some aren't. Sort them first.

Epictetus, Enchiridion 1

The source

"Some things are yours. Some aren't. Sort them first." Epictetus said it in Enchiridion 1. Translated by George Long, 1877.

"Of things some are in our power, and others are not"

George Long, 1877, Enchiridion 1.

Who said it

Epictetus (c. 50–135 AD). Born enslaved, became the most influential Stoic teacher of his age. His student Arrian wrote down the Discourses and the Enchiridion.

Questions

Who said "Some things are yours. Some aren't. Sort them first."?: Epictetus (c. 50–135 AD). Source: Enchiridion 1.
What is the original wording?: Of things some are in our power, and others are not (George Long, 1877). Translated by George Long, 1877.