And keep sending it out until you've exhausted your list of potential publishers. If there are no more publishing houses that you can submit to, or if this story is geared specifically for one line or genre, try rewriting it with a new slant so it fits another line or genre. Or maybe, by now, you've grown as a writer and you see flaws in the writing. Then correct those flaws. Make that story the best you can write at the moment.
Creative people have many ideas.
Not all of them are great. Some stories are a learning processes for the creator. And some are too advanced for the market. This story may simply need to go into the closet for a while. Give the story a rest.