Who said "Gratitude for small mercies sustains the spirit."?

This quote is attributed to Prim Everdeen.

Gratitude for small mercies sustains the spirit. - Prim Everdeen

"Gratitude for small mercies sustains the spirit."

Prim Everdeen Gratitude

"I'm not very good at this."

"I want to help people."

"You could live a thousand lifetimes and never deserve the love Katniss has for you."

"I'm not like Katniss."

"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"