So I'm 20 and I've started looking at the salaries of jobs/careers, and this is the impression I've gotten. Like that you could spend years cramming a ton of knowledge about a very niche field, and still only get 2-3x what a run-of-the-mill job makes. Is this true? If yes then I guess this route to wealth would only make sense (due to the diminishing returns) if the topic truly spoke to you, right? Are there alternative career paths to good pay than being really good at something really specific?
This is somewhat off topic, but it is actually related to knowledge, income, and returns.
I'm telling you from experience, make enough money to live comfortably and stop when you get there. If at all possible, don't have a long commute. Don't have a prestige job. Don't have a position that requires OT or sprints. I deescalated my role to something more banal and my happiness went way up.
You're likely not in a position to do that at 20, but when you get somewhat into a career and life sucks and you hate your work and you want to die, start looking for something that pays less but also doesn't suck the life out of you.