Eudaimonia, or 'happiness', is the supreme goal of human life. Aristotle believed that everything has a purpose - the good for a knife is to cut, and a good knife is one that cuts well. In the same way, Eudaimonia is the 'good' for a person.
Aristotle draws a distinction between superior and subordinate aims. Why do I study ethics? Maybe to get a qualification. I get the qualification to get a good job, and I want a good job because... These are subordinate aims. At some point you stop and say 'because that would make me happy' - and this becomes the superior aim. 'Eudaimonia' is the end goal or purpose behind everything we do as people, and is desired for its own sake.
Moral Virtues
The good life involves developing a good character. Moral virtues are cultivated by habit. To become a generous person, I must get into the habit of being generous. Put another way, it is not enough to be told that I should be patient. To become patient, I need to practice patience.
It is very difficult to translate some of Aristotle's moral virtues. 'Liberality' and 'Magnificence' (popular in many translations) both seem to mean generosity. The following list is an attempted translation: