Consider it pure joy, my sisters (and brothers), whenever you receive rejections of many kinds, (whether they be brief form letters or a personal note telling you all the things you still are doing wrong) because you know that the testing of your faith in yourself and your writing develops humility (which you'll need once you become as rich and famous as J.K. Rowling) and perseverance. Perseverance must finish its work so that you may be mature and complete, not lacking anything. Melanie's paraphrased version of James 1:2-4
So there you go. Those rejections are necessary.
And now I would like to announce that I am accepting query letters from all bona fide literary agents. If you would like to be my agent, please do not hesitate to contact me and I will send you a template application document. If I decide not to choose you, please do not be offended. My agent needs are limited, therefore I must be very picky.