Every time I let a query out loose into the world (or realistically, into an agent or assistant's mailbox) I acknowledge that I've done everything I can. Whatever happens happens. It's a kind of zen moment, not unlike the way, all through junior high, high school, and college, I took that deep breath as the exams were handed out. I had done all I could to prepare; whatever happens happens.
As a result, I've been keeping my basket pretty full of eggs. Every time a rejection comes in, I send off one to two queries. I have four fulls out with agents at the moment, a number that makes me feel really good... until a few days pass and I start anxiously checking my email.
Luckily, at least for the rest of today and tomorrow, I've got a fabulous book to keep me busy (at least until the top of every hour, when I check my email): Jennifer Donnelly's Revolution. I picked up an ARC at Annual and had been holding off starting it because I wanted to read it over a few days when I could really savor its 470-something pages. So far, so sooo good.