I'm a writer by trade. I've been doing art, in one form or another, since childhood. In the last five years I've been learning web design, and general graphics. My first couple of regular jobs taught me what I did not want to do for a living. Please understand, I'm not trying to sound condescending in any way, when I say this. But, I think if I had not spent time doing those jobs. I would never of had the desire, or fortitude to write; much less draw, or paint.
No matter what field of creativity you choose. Make sure you understand the price of becoming a success. And, decide what success may mean to you. Then remember that A lot of the time no one will get what you are doing. I've had manuscripts returned for reasons that made no sense at all to me. One portrait I did in pastel, I had to revise seven times. Only to have the client stiff me on it in the end. oh, he got the portrait by the way, for free. And in this digital medium, I expected much worse before even trying it.
Creativity as a career is more work than a regular job. I like to think of it as a business. A business that sells, manufactures, and distributes pieces of myself. And just as some may not like this companies version; they may not like my version either. You become an artist because you must create. and not the other way around. On the good side; the last manuscript i sent came back with a list of things to change from the publisher. I changed nothing, sent it back, and now I just got an offer from the same publisher. The reason for this change was simple: a different editor looked it over. Keep going, if you feel this is what you were meant to do. But if you think writing a best seller or designing web sites, would be a fast track to easy street, you are mistaken. Nothing i have ever done has been more work than writing.