1. Drop your fears of success and failure
To write fiction you need to write. Readers will read your novel in a few hours, but you write your novel word by word. Those words build into paragraphs, then into scenes and chapters.
Important: you’re writing at a micro level — word by word. It’s easy to make judgments about your writing which are wrong because you’re too close to it. You can’t read as a reader does.
Do your best and tell your story as well as you can. No one’s asking you to be Hemingway. Fears of success and failure get in the way: entertain yourself, and you’ll entertain readers.