i suppose there are a few ways to go about it. By a general rule i remind myself that there are the 'Red Hot Chili Peppers/U2 etc bands', and then there are the 100,000 other bands in the world you've never heard of that manage to feed themselves. Every night of the week in every city in the world there are bars all over town paying someone to play music, but most of us have never heard of any of them.
here's an example of one that's from my town.
they've obviously made it to the next step just this last year and are beyond where our band is at,
but chances are you've never heard of them, even if you're into the genre.
http://www.borealismetal.com
At least that's the way i'm approaching it. Dedicated networking and band members can be enough to scrape by over time, like i said, 13k a year is what i live on. Obviously, if i wanted kids, or to buy a house, or lease a car, or get the big digital cable package or go on a boat cruise forget it. I rent in the less expensive locations available, i ride a simple $1,000 moterbike, drink water instead of pops and juices, don't bother much with TV, and have no savings to speak of, but i don't have any debt really either, so the $5,000 i have that i COULD have on my credit cards are a kind of emergency buffer. So i'm left at the end of the day with mostly all the time in the week to be a dedicated band member and artist. But i couldn't have those other frills.
I guess the hope is that as a band, we succeed more than we fail in the future, but that's where my list is useful. Who says i don't one day have kids or something. I don't know... so i do my research ahead of time to know (at least as best as one can...) exactly how i go about getting a job like taxi driver, tech support worker, electrician etc should things change.
For a solo artist though, i have done some of that but it's not my main focus. The best bet i think is to invest properly in quality synthesising/recording software for your computer. That doesn't have to be ridiculously expensive depending on what you want to do. I started with Reason, but i've found Native Instruments to be an amazing piece as well. Some people will get a keyboard and plug it into their computer so you can play with your hands what you want to write instead of doing so on the screen etc. Some people buy the whole set drums/guitar/bass and record each one live. There's all kinds of things you could do.
That's as far as i've gone personally on that side, but the next step would be to take your finished tracks and sell them online with iTunes or some other program of choice. Then of course finding people to buy your tracks depends on the quality of the tracks/website design/time you are willing to put into networking (eg: clicking send friend request button on social networking site).
@_@