This is the time to be brutely honest, strong, and brave with yourself.
Don't confine your writing. Be Brave. Try new perspectives, let the characters be revealed from many angles. The plot may move the story along, but it's the characters that keep the reader turning pages.
I have learned much from Shawn Coyne and Steven Pressfield. Learning from these talented men helps me to focus on what's really important, the story.
The key to finishing any project is doing the work step by step.