“Do you want to know exactly what’s hiding in that light at the end of the tunnel? Well, I’ll tell you. That’s your legs working again after months of physical therapy. That’s the medication readjusting the chemicals in your brain after you took a razor to your wrist. That’s the bronze A.A. chip after a year of painful sobriety. That’s the warm tickle in your stomach when you find love again after a messy divorce.”