Casey Neistat, one of my favorite YouTuber's, talked about how to find what you love, and he put it simply: do something you hate first.
This way, you'll find yourself dreaming about/thinking about other things that you'd rather be doing. Let's say you've got a day job washing dishes— you loathe the day to day aspect of it, and while you spend your time washing dishes, you think about what you'd rather be doing instead. Whether it's building a company, cooking, or working in fashion, you'll naturally be thinking of something else.
So don't think too much about "finding your passion" at such a young age. You probably won't. I still haven’t. Instead, spend some time working on anything— even if it’s something that you don't like as much. And keep trying new things until something sticks. You just won't know until you try.