Gratitude is the expression of appreciation for what one has.
Start a Gratitude Journal
A gratitude journal is a notebook or diary where you can keep track of the things for which you're grateful.
Want to be happy? Be grateful presented by David Steindl-Rast, TED Global 2013
Gratitude presented by Louie Schwartzberg, TEDxSF
Find it in the Catalog
100's Philosophy & Psychology