Persistence, that great word which means you don't stop until you reach your goal.
Tenacity is part of my personality. I will stay on the book, project, job, whatever, until it's done. Why stop? There's nothing more aggravating than a unfinished project lying around.
Which leads to the frustrating part of being a writer. The real work comes after I write the story. Then I have to find an agent or publisher.
I've sent out the query letter.
Now comes the hard part, waiting for the reply.