εὖ πράττειν
From LSJ
ἐξ ὀνύχων λέοντα τεκμαίρεσθαι → judge by the claws, judge by a slight but characteristic mark, small traits give the clue to the character of a person, deduce something from a small indication, identify a lion from its claws
Greek > English (Woodhouse)
be fortunate, fare well, fine conduct, flourishing, being prosperous, doing well, happiness, success