This was one of the most memorable books I have ever read. Tessa, a girl who has acute lymphoblastic leukemia (a type of cancer) has only months to live. After four years, she decides to forgo the treatment that makes her feel so terrible, and try to make the most of the rest of her life. She makes a list of things that she wants to do before she dies. However, as she gets closer and closer to death, she realizes the things she thought represented being alive really are superficial compared to small but impactful moments in your life.
(recommended for high school readers)