Silver Linings Playbook meets Before I Fall in this New York Times best-selling novel about understanding and accepting your unique self, now available in paperback. If you could read my mind, you wouldn't be smiling. Samantha McAllister looks just like the rest of the popular girls in her junior class. But hidden beneath the straightened hair and expertly applied makeup is a secret that her friends would never understand: Sam has Purely-Obsessional OCD and is consumed by a stream of dark thoughts and worries that she can't turn off.