Full Idea
The word 'eudaimonia' means literally 'having a good demon', which is apt, because it suggests some kind of supreme good fortune, of the sort which might be thought of as a bestowal.
Gist of Idea
'Eudaimonia' means 'having a good demon', implying supreme good fortune
Source
Richard Taylor (Virtue Ethics: an Introduction [2002], Ch.5)
Book Reference
Taylor,Richard: 'Virtue Ethics: an Introduction' [Prometheus 2002], p.30
A Reaction
Beware of etymology. This implies that eudaimonia is almost entirely beyond a person's control, but Aristotle doesn't think that. A combination of education and effort can build on some natural gifts to create a fully successful life.