I actually was turned down for a creative writing class in college. I’m not telling you this to emphasize the injustice and tastelessness of my alma mater, but rather because I always tell would-be-authors that the most important person to convince of your career is always going to be YOU.
I have hundreds of rejection letters, including one from my current publisher and my current agent. All those letters meant was “you’re not good enough yet, Stiefvater.” They are a progress report, not a death sentence.
For me, the point of being a published author is to have a story in my head, and then to tell it well enough that readers can see the same version I am, or close to it. I don’t want to trick my way publishing a novel. I don’t want to publish before I can do that.
And I believe that anyone can learn this trick with enough practice — like learning to play a Bach piece.
So show your writing to other people, and don’t wince if they don’t like it. They’re just saying not yet, not no.