Everything you mentioned brings me happiness, too, Rosi! And many other things. When I was a kid and teen, I would have put music and dancing way up on my list. Though I still enjoy both, they have been replaced in the top spots by more "relaxing" things, partially because my energy levels have waned because of my medications and age.

I can totally see a connection between happiness and "nature and nurture". Though many in my family have experienced depression, pretty much all of us are/were upbeat positive types at baseline, with the ability to enjoy small things in life. Most of us enjoyed nature and many hobbies. My parents did many things with us, when we were kids.