Hygge, the Danish concept of coziness
Lagom, encourages living a balanced life (Sweden)

Learn How to Do Nothing With the Dutch Concept of Niksen (Lifehacker)
In (non)practice, this means “doing something without a purpose, like staring out the window, hanging out, or listening to music,”
https://lifehacker.com/learn-how-to-do-nothing-with-the-dutch-concept-of-nikse-1822310051?utm_medium=sharefromsite&utm_source=lifehacker_twitter&utm_campaign=sharebar

The Case for Doing Nothing (New York Times)
He lived like a slob for a week and learned that it’s important to “let the air out of the tires” once in a while.