1. Never say no.
I can count on one hand the number of times I’ve turned down an article offer or failed to submit something in a call for pitches. Just the other day, I received a call for submissions from an up-and-coming travel website for which I really want to write. Despite having my hands full, I’ve just about got my pitch together. Why? Because I rarely turn down paid work. The more you write, the more capable of a writer you become and, duh, the more money you make.