Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones. I am not afraid.
The exterior things touch the soul in no way. They have no access to it and neither can change the mood of the soul nor move it. Rather it gives itself its mood and movement, and according to its judgements that it makes about its own dignity, it also values the exterior objects higher or lower.
Turn your body inside out like a piece of cloth, look how it is made from the inside and what it will be when age, sickness and debauchery have taken their toll on it! Of short duration are those who praise as well as those who are praised, those who remember and those who are remembered. And even that happens just in one corner of the world, and even there not everybody agrees with one another, a single person doesn't even agree with themselves. This whole Earth however is but a dot.
You will give yourself relief, if you do every act of your life as if it were the last, laying aside all carelessness and passionate aversion from the commands of reason, and all hypocrisy, and self-love, and discontent with the portion which has been given to you.
Dig within. Within is the wellspring of good; and it is always ready to bubble up, if you just dig.
But cast away the thirst after books, that thou mayest not die murmuring, but cheerfully, truly, and from thy heart thankful to the gods.

Remember how long thou hast been putting off these things, and how often thou hast received an opportunity from the gods, and yet dost not use it. Thou must now at last perceive of what universe thou art a part, and of what administrator of the universe thy existence is an efflux, and that a limit of time is fixed for thee, which if thou dost not use for clearing away the clouds from thy mind, it will go and thou wilt go, and it will never return.
If something in the exterior world makes you discontent, then it is not that object which troubles you, but rather your judgement of it; yet to blot out this judgement instantly is within your power. And if your dissatisfaction is based on the condition of your soul, who can prohibit you from correcting your views? Likewise, if you are discontent because you are not doing what seems reasonable to you, why not be active rather than discontent? "But something stronger than me is obstructing me." Still, do not be discontent; for the cause for your inaction is not within you. "But life has no meaning for me if this is not done." Well then, end your life, as calm as if you had succeeded; but don't forget to forgive your adversaries.
"Meditations"