Odds of Hanging On
Yeah, how do we say this politely? You probably shouldn't be writing poetry for any reason other than that you really, really, really love writing poetry. If you wind up getting published (congratulations! It's a big "if"), there isn't any way to ensure that your book will be successful or your career will flourish. Your best bet is to find a position teaching poetry at a college or university so that you can stay immersed in the arts and continue thinking about poetry on a daily basis. While there's certainly no guarantee that professorship is right for you, it is one of the few ways to surround yourself with poetry and other poetic people. Really though, it's healthier not to think about it in terms of "getting in" or "hanging on." Write poetry because you love to write poetry; don't worry about success or lack thereof.