The way to make money as a writer is to WRITE.
Common sense, isn't it?
If you're dithering, rather than writing, "Stop wasting time, make money" will help.
The money quote from the article is:
Here's the key: the more you write, the more you earn. You don't just earn more in the aggregate, you earn more from each and every writing job, because when you're experienced, you can charge more.