I think Mr. Jung came up with a pretty good list :
maintaining good physical and mental health.
Good personal and intimate relationships.
satisfying work and a reasonable standard of living.
seeing beauty in art and nature
a philosophical or religious outlook that fosters resilience
I think gratitude is an effective mirror for reflecting into the present and future all of the good and joyous things of the past.
Knowing that I, many good friends, and everyone here, have put up the good fight for what's right for many years.
Here's an article with well thought out definition of this in our modern world:
https://stylman.substack.com/p/from-fiat-everything-to-real-everything