Today is Leonard Peacock's birthday. It is also the day he will kill his former best friend, and then himself, with his grandfather's P-38 pistol.

Maybe one day he'll believe that being different is okay, important even.

But not today.

The New York Times bestselling author of The Silver Linings Playbook, Matthew Quick, brings an unflinching eye to the impossible choices we deal with everyday-and the light in us all that never goes out.