Eu·​dae·​mo·​nia

Well-being, happiness.

"My wife is the source of my eudaemonia."

Aristotelianism: a life of activity governed by reason.

"His constant drive depicts a will motivated by eudaemonia."

Eudaemonia or eudaimonia is a Greek word literally translating to the state or condition of 'good spirit', and which is commonly translated as 'happiness' or 'welfare'. In the works of Aristotle, eudaimonia was the term for the highest human good in older Greek tradition.