An Abundance of Katherines by John Green

An Abundance of Katherines tells the story of former child prodigy, Colin Singleton, who has an affinity for girls named Katherine and a tendency to be dumped by them. On the heals of being jilted by Katherine XIX, Colin and his best friend (and my personal favorite character in the book), "Hassan Harbish. Sunni Muslim. Not a terrorist.", set out on a rather soul-searching road trip.
While the overall themes may not be starkly original, the story is told with a unique perspective with humor and sincerity. Colin's longing to find a higher purpose is certainly relatable, and I think his ultimate revelations are spot on. Definitely worth reading.