It is possible to depart from life at this moment. Have this thought in mind whenever you act, speak, or think.
Marcus AureliusDo not indulge in dreams of having what you have not, but reckon up the chief of the blessings you do possess, and then thankfully remember how you would crave for them if they were not yours.
Marcus AureliusWere you to live three thousand years, or even thirty thousand, remember that the sole life which a man can lose is that which he is living at the moment; and furthermore, that he can have no other life except the one he loses.
Marcus AureliusNow departure from the world of men is nothing to fear, if gods exist: because they would not involve you in any harm. If they do not exist, or if they have no care for humankind, then what is life to me in a world devoid of gods, or devoid of providence? But they do exist, and they do care for humankind: and they have put it absolutely in man's power to avoid falling into the true kinds of harm.
Marcus Aurelius