Notice a joy that continues to push and pull you. Lots of joys come and go, but some are deeper or more nourishing than others.
If it seems eclipsed at the moment, poke around, try different things, let it find you. It may look like "A Hobby" but it may seem more.
Then do what it tells you to do, and do it often.
And by the way, plan on someone thinking you’re weird for really getting in to something that's uniquely You.