The Lightning Thief by Rick Riordan

Percy Jackson is a series of book that revolves around a 17 year old boy who had ADHD and he finds out throughout his journey that he is the son of Poseidon the God of the Sea. He is then brought to a special camp, Camp Half-Blood, where kids like him, demigods, where kept for their protection and to tell them who they really are. The journey he takes in this first book The Lightning Thief focuses on how to prevent the potential feud between the Olympians and to save his mother from the underworld. Percy, the boy, meets friends along the way who decide to part with him in the journey that he is about to take. The challenges met throughout the way make the book very engaging and a good thriller to read. A good story that incorporates the idea of Greek mythology and themes like you have to discover who you really are. 
Written by Kush Kavadia