Who said "Gratitude is a vaccine, an antitoxin, and an antiseptic."?

This quote is attributed to Christopher Peterson.

Gratitude is a vaccine, an antitoxin, and an antiseptic. - Christopher Peterson

"Gratitude is a vaccine, an antitoxin, and an antiseptic."

Christopher Peterson Gratitude

Psychologist American 1950–2012

"Other people matter."

"The good life is not a static state. It is a direction."

"What you do with your life is up to you. Fish for trout, accept it."

"Positive psychology takes seriously the fact that people want more than just to not be miserable."

"Gratitude makes life richer."

"A grateful heart is a happy heart."

"Respect those who came before us."

"Life's greatest treasures are the people we love"