Get paid what you're worth...
(probably for the most part, I doubt anything here will be news to you, just relaying my experience)
Yeah Rook, one of the significant issues I saw with the amateur cum professional artists was them making anything $/hr worthwhile. A frequent complaint was "after it's all said and done I only made $5/hr". What I didn't understand at the time, to maybe offer advice, was that it's not enough to be able to turn out good work, IE able to do artwork well.
The common failing was yes, these people had some art talent. But they weren't proficient. They could paint well, or whatever, but not quickly. IE, they get hired to do a job for $75. And it takes them 10 hours, plus they have to pay for materials. If they quoted $700 based on estimating it would take them 10 hours, they aren't going to get too many jobs because real, actual pro will come along and quote $75 because they can do it in an hour. And this is a common difference in most professions vs amateurs/hobbyists. Someone is a hobbyists (at best) and thinks "I'll go pro".
Same thing with say being a mechanic. It's one thing to be able to do mechanical work. That's definitely a skill, a knack, whatever you call it, that not everyone has. Mechanics often get paid by the job, if the shop manual says 5 hours and it takes 1 hour, or 10 hours, they get paid 5 hours. So yeah some amateur says "I can be a mechanic" but it takes them 2 days to do a job it should take 4 hours, job after job. Not worth the shops time, not worth the customer's time, and not worth there time.
After 9/11 I couldn't get work and decided to try truck driving myself. I was focused heavily on trying to maximize my hourly pay rate (as a mileage driver). I met people that could spend their 10 hours (at that time) and do 450 miles. I'd meet these types at a truck stop and talking to them they're like "yeah, waiting on a load. I've been here 8 days". My thought was you must be a for shit driver. I usually tried to get around 650 miles in 10 hours. Living my life on the road, I was going to get the most financially out of it I could while being legal.
So I don't think "doing what you love and never work a day in your life" is limited to 1 career. Maybe for some people. But I think most people can love different things. I loved driving truck, as they say "it gets in your blood". After quitting driving, for years, just seeing a rig or driving on the highway would give me that feeling again. Even 20+ years later, I still think about it once every great while. And you know, if I had to do it again, I might.