Frankly, this does not sound like a JFK quote. This doesn't even feel like a JFK quote. Perhaps someone has taken Internet liberty and license to attribute this to him. "One person can make a difference, and everyone should try." John F.
"Do good and good will come for you." I truly believe in "Paying it Forward" and doing small good deeds to put a smile on someone else's face, One of my favorite ways to pay it forward is to pay for the coffee of the person behind me. Makes ya feel good