Simon

“No one could endure lasting adversity if it continued to have the same force as when it first hit us. We are all tied to Fortune, some by a loose and golden chain, and others by a tight one of baser metal: but what does it matter? We are all held in the same captivity, and those who have bound others are themselves in bonds - unless you think perhaps that the left-hand chain is lighter. One man is bound by high office, another by wealth; good birth weighs down some, and a humble origin others; some bow under the rule of other men and some under their own; some are restricted to one place by exile, others by priesthoods: all life is a servitude.

So you have to get used to your circumstances, complain about them as little as possible, and grasp whatever advantage they have to offer: no condition is so bitter that a stable mind cannot find some consolation in it.”
― Seneca, On the Shortness of Life: Life Is Long if You Know How to Use It

“Remember to act always as if you were at a symposium. When the food or drink comes around, reach out and take some politely; if it passes you by don't try pulling it back. And if it has not reached you yet, don't let your desire run ahead of you, be patient until your turn comes. Adopt a similar attitude with regard to children, wife, wealth and status, and in time, you will be entitled to dine with the gods. Go further and decline these goods even when they are on offer and you will have a share in the gods' power as well as their company. That is how Diogenes, Heraclitus and philosophers like them came to be called, and considered, divine.”
― Epictetus, The Art of Living: The Classical Manual on Virtue, Happiness and Effectiveness

“People are frugal in guarding their personal property; but as soon as it comes to squandering time they are most wasteful of the one thing in which it is right to be stingy.”
― Seneca, On the Shortness of Life

“It is not that we have a short time to live, but that we waste a lot of it. Life is long enough, and a sufficiently generous amount has been given to us for the highest achievements if it were all well invested. But when it is wasted in heedless luxury and spent on no good activity, we are forced at last by death’s final constraint to realize that it has passed away before we knew it was passing. So it is: we are not given a short life but we make it short, and we are not ill-supplied but wasteful of it… Life is long if you know how to use it.”
― Seneca, On the Shortness of Life: Life Is Long if You Know How to Use It