Personally, I'm studying web design to go with my graphic design to make the transition from retail work to more artistic work. To do that, I learned to type, use the Abobe Creative Suite, and took a course on computer programming, something I've always been scared of. It's eaten up all of my free time, but I like it and it's already made a difference in my employment, since I've done some design work as well as office work thanks to the computer skills. It's also increased my pay rate above minimum wage.
I've also taken a more proactive stance in promoting and writing my music, getting onto iTunes, and generally not being afraid to sell it. Studying economics helped, since previously I believed on some level that the arts were a luxury, and that real work consisted of farming, construction, and the like, things that produced food, shelter, etc. That comes from a blue collar background. But I've learned that art is a psychological need, and economically, that division of labor and free trade have created more potential worth than any agrarian society ever did. And without music, as Nietzsche said, Life would be a mistake.
The other thing that helped was the philosophy of Objectivism, which I've found really beneficial from an aspie standpoint; seeing that I was something of a space cadet before, it's given me a newfound respect for reality and logic that was lacking, and it has only improved my imagination and artistic creativity, because now, instead of being lost in space, I'm making my own little world. And it's given me a moral foundation that justifies my existence in this life.