Vemödalen: The Fear That Everything Has Already Been Done

Vemödalen: n. The frustration of photographing something amazing when thousands of identical photos already exist.

Neil Gaiman:

There are very few story-shapes in the world (I won’t argue with anyone who has a number or a list). Robert Heinlein, for example, said there were three, Boy Meets Girl (love - impeded or successful), The Little Tailor (go from humble beginnings to greater things) and A Man Learns A Lesson…
Just write your story. Don’t worry about whether someone else has written it. Perhaps while you are worrying and not writing, someone else will write it and publish it.
Tell your story.