This article was excellent and is still freelancing after 10 years.
http://jenamiller.com/notes-from-a-hired-pen/10-years-of-fre...
And there are lots of posts out there. There are actually more posts about freelance writing, than about freelance programming. Whenever I look for articles about freelancing it seems that writers have the top spots in the Google.
In sum, it's a great field. The need for more content is increasing, and if you are good and make a name for yourself you'll make it.
I suggest that you make a goal to write X words a day. Also, writing a book will increase your Authority, and help you get more work.
Keep on writing.
