Rejection can be a task master making you try harder, be different, fit in, conform, and do what will make you feel accepted. In writing, this may make the writer try to perform. But, acceptance is another story. If your story is accepted as is, for what it is, and published just as it is, then you are blessed. You don’t have to do anything different or more to be accepted by a publisher. But what happens if some kind of work of yours gets continually rejected? Maybe you don’t know why you are writing something and even if you did and got rejected it wouldn’t matter–because you know why you are doing it.
Personally, I have found the key is to find security in why I am writing something, then any amount of rejection won’t matter. It’s the harder path to come to realize why I want to write something, but the one which says, I don’t have to write in this another way, because I know why I am writing this. Who cares about rejection!