1. Be persistentAs with anything worth doing, you can't give up at the first hurdle. Or the second. Or the third.So what if you've never been published, or if your short story has been rejected umpteen times. Don't let it put you off trying again - thousands of successful writers were once sent rejection letters too, but they didn't let it stop them and now their work can be found in bookshops everywhere, as well as online. Roald Dahl, Stephen King, J.K Rowling and George Orwell are just some of the many famous authors who were once turned away by publishers, not once, but repeatedly. If you're feeling downhearted because you're convinced that you'll never be published then read this article by Michelle Kerns: http://www.examiner.com/article/30-famous-authors-whose-works-were-rejected-repeatedly-and-sometimes-rudely-by-publishers
Remember, if you're not happy with the way something is sounding, then you can always rewrite it!