The Gifted - The Gifted, #1

Jeremy is a quiet boy. He struggles to look people in the eyes, and just the thought of conversations turns his stomach inside out. Only one person has ever connected with him: Avella Summers, his best friend since childhood. Well, her and the voices lurking in his head-those sickly syllables powerful enough to manifest into tangible monsters. They torment the boy, ordering him to grab the nearest noose.
One night, however, Jeremy is greeted by a mysterious man from the heavens who promises that he can get rid of the monsters once and for all, so long as Jeremy takes care of the gift he is given. Little did he know that the gift he received would change his entire outlook on the world-or rather, the worlds.