When you see things. Hear those underdog stories. Cry in the Pursuit of Happyness. How much would $1 be for a person on the street, compared to a successful persons $1. A bottle of water could mean living an extra week. Or even an extra hour to hold onto.
I chose to support HKWS because I believe in a world where no matter how much you make, each dollar becomes something much greater. Join the run or support their cause. Whatever it takes to get that extra dollar to the next person.