Any description of happiness that makes sense would have to say that it's some sort of local comparison, across various axes: how am I doing compared to previously/expectations/other people?
This is why when you acquire some new gadget, you say you're happy. You can now mow your lawn, which you couldn't before. Going forward, you expect to be able to mow your lawn. If your lawnmower breaks, you're sad. If it doesn't, a working lawnmower was already priced in.
This is why billionaires like Elon can be unhappy, too. Otherwise they would be bouncing off the walls giddy with joy all the time.