Aristotle argued that eudaimonia is the highest human good, the ultimate end toward which all our actions aim. It is achieved not through passive enjoyment but through active engagement in rational activity in accordance with virtue.
The eudaimonic life involves developing and exercising our rational capacities, cultivating moral and intellectual virtues, and participating meaningfully in our communities. It represents a life lived in harmony with our essential nature as rational, social beings.
This concept influenced Western philosophy profoundly, offering a framework for thinking about human purpose and the good life that remains relevant today.
Source
Nicomachean Ethics - Aristotle