I love the way you talk about the project. I can't help much with the selling part, but please don't forget to appreciate the work you've done on it.

Sometimes when things don't work out(which are mostly reasons beyond our control), we fail to give ourselves credit for having the courage and the effort to make those things happen. And the same when something good happens to us, we give us too much credit and forget the luck aspect of life.

Wish you a great day