How did successful professionals decide what they are passionate about?

I'm so curious how people decide their careers. And I don't mean just regular 9-5 job type careers because most 9-5 jobs for majority are just that - 'jobs' to earn a living. Those are easy to decide.

I'm talking about careers or jobs that people do that they are passionate about, really enjoy, devote their entire lives to, and wouldn't trade for another career. For example an engineer who is an expert in earthquake proof buildings, an artist who specializes in glass art, a university professor researching something, a local farmer expert in growing microgreens etc.

How do they determine, or find, what it is they like to do? How did they determine that they have a passion for that particular field?

This is what I am struggling with. I always wanted to be successful at something. To be a professional in a field, an authority in a subject, or an expert at doing something. But never in my life could I pick a specific field that said to me 'that is what I want to devote my entire life to'. I always look at those successful people, and I'm so jealous. I wanted to be that person but I don't feel like I ever will. And in fact it's gotten to the point where I've completely given up on trying.

I just can't figure it out, and the more time that passes, the less time I have in life to become that which I always wanted to be.