No one can write the novel you can. You are unique.
No one has had your childhood, studied the same coursework, read the same books, had the same friends, ran the same races, had the relationships you’ve had, thought your thoughts…
So no one is going to write the same story as you. No one can, you are unique. Even if you rewrote Hamlet, it would turn out completely different than Shakespeare.
For years, I thought something was wrong because my poetry was unlike anything being written. But then I had a lot of local fans. Then I realized that my life is unique, I haven’t copied anyone or tried to conform to any style, and so, naturally my poetry would be unique.
The novel I am writing is also unique. It comes out of my life. Whether there is a market for the novel or poetry is irrelevant.
No two people are alike. No two stories are alike, if they are not directly copied from one another. West Side Story is not Romeo and Juliet, although it is based on it. And Prokofiev’s Romeo and Juliet is not Shakespeare’s play either. Each is a new art form. Each is valuable in itself.
Minimizing what you can do can also create writer’s block. If you ask yourself, “What do I have to say?” you are definitely setting yourself up for writer’s block.
If your work resembles no other, hurray!