The best way to find yourself crossing the finish line of a project, is to set some goals throughout the process. Goals provide opportunities to reach points of fulfillment, and offer other points of inspiration and encouragement. Usually the feeling I have most often is a brief sense of release and accomplishment, which gives me strength to push through to the next part of the journey.
I just met one major goal yesterday, by completing the first part of an epic fantasy I'm writing, and I can't really express how excited I am. How weird is that with me being a writer? This not being my first book, I've learned to not get carried away by those emotions and push ahead too fast. But, WOW! It's really exciting.
So, all you writers out there - how close are you to your nearest goal??? Good luck!