I know many of us love the practice of gratitude. Louie Schwartzberg's work on gratitude is so visually moving and his words just sink in. This definitely gives my immune system a boost and I could watch each and every day.
Here is his website and I'm going to include a beautiful video from a TED talk he did in 2011. https://movingart.com/gratitude-revealed/
Gratitude: A Short Film by Louie Schwartzberg.