I read something really interesting lately that suggested that all books written, all books being written and all books that will be written in the future are in dialogue with one another. I think this is very true. When I write my own novels I see how stories I've read before help craft my own stories. I see how I respond to characters I've read about either positively or negatively with my own characters. I see myself combat similar scenarios and find new outcomes. I mean, where would literature be now without the classics to learn from and to build off of? And where will books be in the future without the work people are coming up with today?
Consider the books you've read and see if there is a bit of a "call and response" there. And consider the stuff you're writing, what are you saying about what's come before and what are you saying to what will come in the future?