Just Enough

Theognis 1155-1156 (tr. Douglas E. Gerber):

I do not crave or pray for wealth, but may I
live from modest means, suffering no ill.

οὐκ ἔραμαι πλουτεῖν οὐδ᾿ εὔχομαι, ἀλλά μοι εἴη
    ζῆν ἀπὸ τῶν ὀλίγων μηδὲν ἔχοντι κακόν.

Greek Anthology 10.113 is similar.

Tibullus 1.1.25 (tr. J.P. Postgate):

May it now be mine to live for myself, to live contented with my little.

iam mihi, iam possim contentus vivere parvo.