I believe every single person must define that for themselves, and should be a definition specific for a short timeframe, it is useless to think about an "end-goal-well-spent" time because your opinion about what is well spent is gonna change of course

For example, for me right now an example of "time well spent" is playing with my elder cat. I try to reduce the time dedicated to every other thing today just to be able to get more of this

It sounds good, but I’ve been trying to figure it out myself for years…