Self-doubt badgered me all morning, but I have managed to ignore its ugly voice and sent out three more queries. I feel really good now. I know I will probably get more rejections, but every rejection teaches me something new. If all the agents start saying the same thing, then I've got some work to do, and I'll do it.
I want to be a great writer and the only way to become that is to put myself out there and learn whatever I can... even if it is through a rejection letter.