I think the issue for me is the wholesale brokenheartedness of humanity.
I suffer from being too sensitive to this frequency around me. It comes through more often than not, when I'm most vulnerable to it, too. Some days I think I know why this exists... and other days, I don't have clue one. Some days it makes me angry at the injustice and I'm ready to put on my amazon armor and go put things "right"... for those people who need something to cheer. Other days, I just want to go hide from all it all.
I don't get to do either one. But there are a couple things that really help, the things I can't "help" in reality.
Babies!!!!!

Anyone giving birth, the babies themselves, the whole nesting ritual and anticipation of welcoming another of our "tribe" into this life - another who will surprise us, frustrate us, and still make us smile.
PUPPIES!! This one is self explanatory. And it's puppies more than kitties - even though I prefer the lower maintenance of cats. Puppies are sillier, I think. Maybe not, though... my "feral" kitty, who finally starting to accept hubs' presence and be domesticated... is pretty silly, too. A clown.
Laughing - no matter the reason for it. Yes, there are some fits of laughter that are healthier - and more of a release - than others. But any kind of chuckle... snicker... guffaw... or uncontrollable, crying and almost peeing oneself laughing fit I think is the yin side of yang sadness/anger. It's just as fierce and powerful, in full roll...
in the words of the bard, Jimmy Buffett:
"If we couldn't laugh, we'd all go insane".