Well, first of all, do you have a portfolio? Any works that you’ve published anywhere, including online? A blog, perhaps? Whatever type of media outfit would first need to see that you’re up to the task, even if writing has heretofore merely been an avocation. So if you haven’t already, start writing for an hour daily, the focus being on essays (yes, the same type you learned all about in English 101). And of course, read a lot: other essays, like those published in higher-end magazines like The Atlantic and Harper’s, biographies, anything you might take a special interest in.
If you haven’t taken that yet, do so. In fact, get the undergrad degree in English. Indeed, get the graduate degree in English if you can afford that and it seems prudent. (That can open up the field of teaching if publishing falls on hard times.) And of course, write and publish throughout that period in order to build up your portfolio.