this sort of reminds me of RPG games. i never know what class to choose, they all seem cool in most games. so what i usually do is look at the end level content for what a class will be capable of and choose based on that, even though i never have time to actually get to that stage anyway. but the concept of working towards something is super valuable to me. i know its not exactly directly applicable to real life, but perhaps finding youtube videos or something on what is possible if you're an expert at said subject would probably help you choose something

Just pick something and see where you can take it.

The problem with talents/careers/skills is that they all have a valley in between the "just started learning" high and the "I'm actually good at it now" high.

When you first start, you're learning quickly, and you can celebrate the small wins as they roll in because your growth is very visible. Once you're good at something, people start to recognize you as an expert, and the external feedback helps a lot to motivate you.

The valley in the middle is the tough grind that gets to many if not most people. If you are lucky enough that your enthusiasm and passion carries you through it, then good for you! But if you aren't, that middle valley is where willpower and persistence are very valuable.

I've personally experienced both. I was lucky enough that a combination of formal college "do it for the grade" motivation and some inherent enthusiasm carried me through that valley for coding.

But for piano... there was probably 5-6 years in the middle that was a real slog. I eventually got good enough that with practice I could play almost any music you put in front of me, and now I enjoy it, but it was a slog for most of the years I spent learning.