They can only distract you. You should write because you want to, and you should write what you want to. Let the market take care of itself. I can't guarantee that this will get you published. I can guarantee, however, that attempting to pattern yourself after a successful author is an almost certain way to strangle your own voice and collect an impressive number of rejection slips.
Editorial rejection is almost never personal.
Any editor or agent who makes it so without a remarkably good reason is a lout and should be treated as such. Good luck with your writing. Remember that should be the fulfilling part. Publication is just the cherry on top of the sundae.