Thanks everyone! Take part in contests if you can. I participated in the
"Like a Virgin" contest for unpublished young and new adult writers this spring. I came in 6th place and got a bunch of requests from agents as well as this publisher. I was also supposed to win a critique from an agent (who will remain nameless) as my contest prize, but she blew off giving me my prize. It was discouraging. I waited months.
Eventually, I gave up and began submitting to the requesting agents. I wasn't very hopeful since I hadn't had my professional critique, but I figured, what the hell? The first one I submitted to was this publisher. I waited about a week and a half or so, and then I got an email offering a book deal.
I never could have done it without this contest! If you write new or young adult, be sure to take part next year!