© NBC NewsRachel Wheeler
Leogane, Haiti - If there really is something called "helper's high" - that feel-good sensation that comes from extending a helping hand to others - Rachel Wheeler is soaring.
The 12-year-old Florida resident has done more to aid others than many grown-ups do in a lifetime.
Three years ago, when she was only nine, Rachel tagged along with her mother to a very adult meeting about charity work in Haiti. She listened as Robin Mahfood, from the aid agency Food For The Poor, describe children so hungry that they eat cookies made of mud, so poor that they sleep in houses made of cardboard.
At the time, Julie Wheeler wasn't even sure her young daughter understood much of what was being discussed - "until Rachel stood on a chair in front of all those adults and pledged to help Food For The Poor," Wheeler said.
Then a fourth grader, Rachel promised to raise money to build a dozen homes in Haiti.
"Rachel didn't just want to help," her mother remembers, "but she said she had to help."
Comment: Empathy: Empathy is being conscious of, or sensitive to, the emotions of another person or group of people.