Greeting card publishers are an upbeat group – spending all day trying to discover new ways to wish people “Happy Birthday,” and “Thank You” tends to do that to you. During a breakfast at the Greeting Card Association’s recent annual convention, the idea of pooling resources to create waves of happiness was put on the agenda.
Happiness is infectious and can “ripple” through social groups such as family and friends — the British Medical Journal
Inspired by the GCA in the U.K., publishers in the U.S. recognized that encouraging people to send a card or a letter everyday for one week – just because – could create meaningful changes in our country’s mood. There is nothing quite like receiving a card in the mail!
That was the beginning of Thinking of You Week USA. 
