What are the motifs in The Sky Is Everywhere by Jandy Nelson?

Self-Discovery is a recurring idea. Lennon has spent her entire life in the shadow of her sister. Bailey is a very outgoing, effervescent young woman. Lennon likens Bailey to a racehorse, the star of the show. For this reason, Lennon has always settled into the background. Lennon does not like being the star of the show, the center of attention. For this reason, Lennon has put her own talents on a back burner, refusing to take the first chair in band so that she might have all the solos.