The recovering drug addict with a long rap sheet who had just sat down on the bench in a Philadelphia train station often wondered if he was a good person, and perhaps never considered that anyone thought he was a hero to anybody.

But there was no self-doubt when Christopher Knafelc's instincts kicked in Thursday and he leaped onto the tracks to help a complete stranger he'd just seen flail and fall off the platform.

Now, Knafelc, 32, is being hailed as a hero and he's holding his head a little higher, viewing the good deed he did, and the praise that followed, as another sign that he is on the right path in life.

(READ the story from the CS Monitor)