Chrysippus, Fragments (in Plutarch, On Stoic Self-Contradictions) 1042D

Men seek retreats for themselves, houses in the country, sea-shores, and mountains... But this is altogether a mark of the most common sort of men, for it is in thy power whenever thou shalt choose to retire into thyself.

At dawn, when you have trouble getting out of bed, tell yourself: 'I have to go to work — as a human being.'

Your present opinion founded on understanding, your present conduct directed to social good, your present disposition contented with everything that happens — that is enough.