Don’t hold back. Keep on pounding. Write so hard it wears you out. Save the cleanup for when you come back through editing.
Come to think of it, you should write the whole thing that way. Whatever it is. Vampire Romance or PHD thesis, skip the filler fluff and pour all your effort into whatever you think is awesome.
(This might make for very thin vampire romance novels. But who am I to judge what others think is awesome?)