This one was a no brainer for me. I rarely read young adult novels. I've said this before but even as a young adult I only read horror and thrillers. While I've read many good young adult books, the genre just doesn't call my attention. However, last year I read this one book and I fell. Hard. I absolutely love this story and I recommend it to everybody I come in contact with. Best book I read last year: The Sea of Tranquility by Katja Millay.
Buy it. Read it. Breathe it.