You've come so far! You may do many things, but suck is not one of them!
I was almost in panic attack territory coming to the end of my first draft. I procrastinated in every possible way. I loved the characters and knew that some of what I had to write would break my heart. I knew it meant going back and looking at what I'd done with a critical eye and that terrified me. And I was afraid I'd never be so driven to write anything again and didn't want to give it up.
It's a journey. You're chugging into a station. It's not a place you've been before, and it's a little dark and spooky. But hey, you got yourself there! Figure out what you can do to celebrate when you reach the end (I cried and took a shower - try for something a little more celebratory than that) and be proud.