... freak out for a little bit when you get your editor's feedback. My book is shit! There's so much work to do! I'll never manage to pull it into a publishable state!
Your book isn't shit.
You've got this
... cheat on your book by daydreaming about the next book and its irresistible new characters and plots
... take yourself off to a coffee shop to write. There's no TV there. You don't have to connect to the wifi if you're really strict with yourself. It's all about lessening the distractions. It has nothing to do with the frappes and the baked goods.
Nothing. At. All
... have a little internal weep when cutting scenes or characters you love. But all is not lost. Cut and paste is your friend. Keep those scenes/characters to use in another book where they'll fit better
... reward yourself with snacks. Gotta get that motivation from somewhere, right?
... be a little bit sad to say goodbye to your characters when you send the book off to your editor for the last time. But also...
... celebrate saying goodbye to your characters when you send the book off to your editor for the last time because you'd quite happily never hear from these characters or read their story again. Enough is enough. Be gone (this feeling will pass. Probably)