Notice a joy that returns from time to time to push and pull you. Good moods come and go, but joys are deeper and more nourishing and less evanescent.
If it seems eclipsed at the moment, poke around, try different things, let it find you. Some joys solidify in "A Hobby;" others may be service to others or meditative paths. If a joy finds you, do what it tells you to do, and do it often.
[And plan on someone thinking you’re weird for really getting into something that's uniquely yours.]