Read https://www.amazon.com/Guide-Good-Life-Ancient-Stoic/dp/0195....

Marcus Aurelius is a stoic, just look at some of his quotes, that is stoicism.

"The happiness of your life depends upon the quality of your thoughts."

"Waste no more time arguing about what a good man should be. Be one."

"If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this you have the power to revoke at any moment."

"When you arise in the morning think of what a privilege it is to be alive, to think, to enjoy, to love ..."