The aim is not to choose the right but to become the sort of person who cannot choose the wrong and who no longer has {x} any choice in the matter. This is what he sometimes expresses as becoming like a god, for the gods, as he puts it in Euthyphro (10d), love the pious (and so, the right) because it is right; they cannot do otherwise and no longer have any choice at all, and they cannot be the cause of evil.
