Here is a quote from Paulo Coelho that seems appropriate for this topic:

Ester asked why people are sad.

“That’s simple,” says the old man. “They are the prisoners of their personal history. Everyone believes that the main aim in life is to follow a plan. They never ask if that plan is theirs or if it was created by another person. They accumulate experiences, memories, things, other people’s ideas, and it is more than they can possibly cope with. And that is why they forget their dreams.”
― Paulo Coelho, The Zahir

I agree with Chiwonk in that self discovery is a significant call in itself. At the moment, you have a unique opportunity to experience the world anew and instead of approaching something with set goals in mind, approach it with curiosity and a sense of adventure. Sometimes when we have set goals in mind, it limits our perspective and put undue pressure in the activities we engage in. When we approach something with curiosity and without judgement, we open our hearts to all kinds of possibilities.

Consider this: if you don’t have to worry about money, time, etc what would you do? Have a look around to see what activities are available that’s consistent to that idea and jump into it. If the activity is as fun as you imagined it to be, great. If not, it only means that you are one step closer to discovering what you are passionate about. Like any scientific experiments, it’s simply a process of elimination and if you see it as a grand adventure, you will have fun doing it as well.