Eudaemonia is the Aristotelian concept of happiness, not based on hedonism or laughter but on the achievement of a satisfying existence, the idea that living a focused life in the pure pursuit of what fulfills your soul will inevitably lead to happiness. There’s some scientific support for this, but I prefer to go with anecdotal, the idea that when we’re working on something that fills us with purpose, it also fills us with exhilaration, no matter what the task. It’s akin to Mihaly Csikszentmihalyi’s idea of flow, a transformative state of consciousness when the worker becomes one with the work. I get that from writing and from art, I know many here get it from gardening, I’ve known people who’ve gotten it from the beauty of math problems and the elegance of writing code. It doesn’t matter what the task is, it’s that melding of avocation and vocation, doing satisfying, valuable, honest work that also in some way serves a greater purpose within us, that creates eudaemonia.