If there's anything being an artist will teach you, it's that you've got to make a mess in order to create. The same is true with writing your novel. It's no less a piece of art in progress than a painting. Sometimes in order to get to the heart of your story you have to write yourself into a corner you aren't sure you'll be able to get out of... this is the novelist's version of a "mess". Then give yourself and your characters a chance to figure out how to get out of the mess you're in. Some of your most creative work can come out of this mess, out of this not knowing what comes next, out of this paint splatter that you didn't intend.
Let go of your need to control every single moment and see what happens with your writing. You may surprise yourself.