At dawn, when you have trouble getting out of bed, tell yourself: I have to go to work—as a human being. What do I have to complain of, if I'm going to do what I was born for—the things I was brought into the world to do? Or is this what I was created for? To huddle under the blankets and stay warm?
Consider that everything is opinion, and opinion is in thy power. Take away then, when thou choosest, thy opinion, and like a mariner, who has doubled the promontory, thou wilt find calm, everything stable, and a waveless bay.
When thou art above measure angry, bethink thee how momentary is man's life.
A person's worth is measured by the worth of what he values.
The Stoic discovers the model for his virtuous conduct in studying the laws of nature; just as each object, plant, and animal serves its fated role in the larger order, so the human strives to steer his actions in accordance with his unique power, reason, his inner mirror of the logos that governs the universe.
Meditate upon what you ought to be in body and soul when death overtakes you; meditate on the brevity of life, and the measureless gulf of eternity behind it and before, and upon the frailty of everything material.