You're a freelancer. You have perseverance, get-up-and-go and an independent ability to get the job done. And the better you are as a freelancer -- whether you're a writer, designer, programmer, producer or all-around task monkey -- the more you have in common with a small business, with all its joys, victories and headaches.
Successful small businesses are run by disciplined, patient people with a talent for adapting quickly to change. The same is true for freelancers, because to be successful you need to cover all the operations that a business does. In other words, you must function as your own accounts payable, human resources, administration and marketing departments.