"There are some really good reasons to do work-for-hire. It’s a valuable way to build a reputation. It’s probably not wise to devote 100% of your time to it, but only you know what your priorities and appetites are, and no one else has a right to judge them. And, yes, every job has its drawbacks and moments where it’s better to be flexible than absolute. I truly, truly understand having to take work you don’t love, or work with folks you don’t love, in order to make the rent. And early on, there are things I put up with that I now regret, and there are opportunities I lost because I pushed back, and there are still things I do sometimes to be a get-along guy that aren’t always in my best interests. Everyone’s threshold is unique, and sometimes you let someone take undue advantage because the cupboards are bare or because you’re dealing with a friend who’ll get yelled at if you don’t toe the line. I get that. Circumstances are circumstances. But if you never listen to another word I say, and I talk a lot, please know this: the only one watching out for your future is you."
-- industry veteran Mark Waid, from a lengthy "Open Letter to Young Freelancers" that's a must-read not only for comics creators -- of any age, and at any stage in their careers -- but also for freelancers in other fields, to say nothing of editors, publishers and consumers.