The key is to find that delicate balance between work that earns you steady pay, and fulfilling your creative desires. I hate to break it to you, but the ideal of doing what you love doesn't always translate into a sustainable income. BUT.... you can compromise to some degree.
Using my own example - I went to college for a 4-year program in visual art and graphic design. This was during the tech explosion in the late 90s - early 2000s. I always wanted to be a comic book artist, but I saw the harsh reality of the industry when a mutual friend introduced me to an independent creator who had done fill-in work for DC and Image comics (inking, storyboards, odds and ends, etc.)
He was miserable. And he had been working at it for almost 10 years at that point. He also had produced his own indie comic, did illustration work on the side, but he barely made enough to pay the rent on his studio. I didn't want to live like that - so I looked into a profession where I could do something I was decent at and earned enough money to give me what I needed. That was graphic design.
With my background in illustration and graphic design, I started off in an entry-level position for a small boutique agency. Now, 15 years later I'm the creative director and second-in-command. I earn a good salary and I enjoy working, but I don't LOVE it. That's why comics/illustration (which I LOVE) is a hobby that provides me with enough freedom to do as I please and earn a bit of extra money on the side.
Some day, that may change. I may make more doing the side stuff than I do at my day job - which could lead to me leaving my day job and continuing on with my illustration and comics work. But then you have all the extra headaches that come with running your own business.
So there's never really an ideal job where you wake up one day to work from home (or your cool studio) on your own projects all day, and not have to deal with the daily headaches of accounting and clients, etc until you've hit the top level. Which means, you have to tough it out through all of it to get there.
If you're motivated enough to do it - that is fantastic. I wish you the best. But realize that there's a long, hard road to success that every successful person has to travel. Do what you love, but be realistic!