So you’re well on your way to a blossoming freelance writing career. You’ve got plenty of publishing credits to your name, clients with upcoming projects tailored just for you, and fresh ideas for writing pieces you plan to tackle this year. What more do you need to succeed? You might say nothing—but you’d be wrong. To succeed in today’s freelance writing world, there are some key must-haves for experienced writers that fall outside the obvious. Here are five that come to min