There's an established science to happiness that has identified three types of happiness:

Edonic
Eudaimonic
Chaironic

The first is associated to gadgets like new phone, pc, car.....maybe even new partners in some cases :-)....this kind of happiness lasts no longer than a few months.

Eudaimonic comes from a state of overall satisfaction with oneself. it's built over time and difficult to shake. it's like an average awareness of who one is regardless of events exterior to yourself.

Chairmonic is total "enlightenment".......possibly reserved to a very privileged few in this world.

....most of the time I'm stuck with the first one in the list!