Dealing with the feeling inside that you know you're a hack but everyone tells you how much of a great writer you are
We're all hacks. Take comfort in the knowledge that you can only create from the total sum of what you know. You can only know things by wielding your sensory organs (sight/smell/taste/touch/hearing/et cetera) and capacity to disseminate what it is your sensory organs pick up on (logical deduction/how do you feel?) to create a pool of information to draw upon.
Everything you know, every thought you possess, is a result of environmental interactions and assimilation of information throughout your life--your experiences as an individual. Ergo, absolutely everything you will have ever created will always be the sum product of remixing what it is you already know. Some of the most basic ways one even begins to create a world, or wield a genre, or add emotional/personality attributes to a person,
requires you understand about the same kind of information as others in order for it to even be intelligible.
Originality is a lie by the very nature of how our brains work, and it's not the golden idol everyone makes it out to be. Creativity is not about creating something from nothing: Everything we understand about the universe makes it so that the "something from nothing" concept is
literally, physically impossible. You cannot create or destroy energy, for example.
Creativity is about taking something that excites you and presenting it in a manner that is fresh and different from what's around it, not creating something from nothing!
Star Wars is just a stereotypical fantasy tale recycled in space. Shakespeare wrote about some of the most fundamental human emotions that everyone can understand and thinly wrapped them in the guise of human beings acting out a tale. Star Trek is just an excuse to talk about philosophy and the human condition, and sometimes social issues of the times. Tolkien's works involved recycling a lot of old mythological ideas and presenting them anew, and the ring-hobbit relationship is just the classic "great things, small packages" tale. None of these stories are truly, entirely original: They just take from before, remix it with a passion, and make it something interesting.
So, yeah, we're all hacks. So was Tolkien: The guy stole a bunch of shit from the mythos of his day. God fuckin' knows Walt Disney built his entire empire on retelling old tales with that good ole' Disney charm.
Don't beat yourself up over it mate. Just write what interests you, and don't chase after false, impossible goals. You can't be perfect, you can't create something from nothing, and we're all going to die in such a short frame of time that the universe will not have even had a billionth of a moment to even consider our existence. Enjoy yourself and only set goals that are achievable, strive for improvement--not perfection--or you will always think of yourself as a hack in a negative sort of way.