I never had any doubts about this. (Well, maybe a few on the days I skipped writing because I was annoyed with the main character and the monotony of some of the story, but we'll just pretend those days didn't happen.)
I'm so happy to be able to call myself a third-time winner... but I decided I hate this novel and want to bury it in a drawer and never see it again. And that is okay. Even if I never put it through revisions and put it on submission, and even if no one else in the world ever reads it, it was still really good practice for everything else I will go on to write.
And now I can go back to my revisions of FAKE!