There's a special time early in the writing of a book when it's just you and the story. Nobody else has seen it. Nobody has rendered an opinion, pointed out its flaws, or wished it were written differently. You can enjoy the book thoroughly; you can dream of its smooth completion, envisioning what you hope it is becoming.
There will be
revisions. Many, many revisions. There will be second-guessing and
overhauling and deletions. But for now, it's like the first date where
everything's clicking. It's the first day of the dream job. It's getting
that phone call you've been waiting for. It's a magic to be enjoyed
while it lasts.