The elderly parking lot attendant wasn't in a good mood.

Neither was Sam Bierstock. It was around 1 a.m., and Bierstock, a Delray Beach , Fla, eye doctor, business consultant, corporate speaker and musician, was bone tired after appearing at an event. He pulled up in his car, and the parking attendant began to speak. "I took two bullets for this country and look what I'm doing," he said bitterly.

At first, Bierstock didn't know what to say to the World War II veteran. But he rolled down his window and told the man, "Really, from the bottom of my heart, I want to thank you." Then the old soldier began to cry. "That really got to me," Bierstock says.

Before you go.