I just can’t push publish

I’ve been working on this fiction book for 5 years. Wrote it in 4 months. I’ve made so many edits it’s a well polished stone. But everytime I say, “I’m ready to publish” I say, I’ll just make one more edit. Hate it, then not look at it for 2 months and just write poems, but no substantial works. How do I get over this project so I can just move on? I’m sure other people have had this problem. I need it to be perfect but that’s impossible.