During the go-go eighties I wrote user manuals for a software house, and that paid quite well. I mastered the art of gracefully gender-neutral prose. My instructions were clear and unambiguous. Nobody read them; nobody ever reads the manual. But the hours were regular and the money was good.
A job where you write for a living has its advantages and disadvantages. As a naval officer, Robert Heinlein learned to write clearly and say what he meant the first time. Newsman Jimmy Breslin was disgusted by the prose style of those of his fellow Irishmen who became lawyers. The law, he felt, was a bad day job for a writer. Newspaper reporters learn to write fast, write clearly, and write whether they feel inspired to or not, and they are constantly exposed to Life as it is Lived, but openings in that field are becoming scarce.
You might set forth under the impression that you will make money right away by writing what you want to write, be it flaming romances or literary fiction. Occasionally, this sort of thing happens. People also hit it big in the lottery, or so I hear. Good luck. But keep your day job.
* Short Order Cook - Kevin Feary