On my trip to London, I decided to talk to at least one stranger a day on public transit and in pubs. My social skills ...

2. Daylight is your friend: While it might not always be possible, try to avoid meeting strangers at night. If it’s inevitable, choose a well-lit location with plenty of people around.

Vige Barrie has mild cerebral palsy, which occasionally makes her trip and fall. One day, she was in Washington, D.C., for a big meeting. Little did she know, she was about to meet her unsung heroes.