I had coffee today with one of the co-founders of the non-profit GNHUSA.org. They are doing wonderful things!
Vicki Robin (one of the pioneers of the FIRE movement) gave a talk at a GNHUSA event. You can see it here: http://www.vermontcam.org/show/plenary-keynote-vicki-robin
There is a really cool "happiness walk" that is making its way around the country. You can find the route and dates on the website, in case you want to join the walk or open up your home to them to stay overnight: http://gnhusa.org/happiness-walk/
(I may consider joining the section from LA to SF).
You can sign their charter here: http://gnhusa.org/charter-for-happiness/
This could make for a cool PF blog guest post with an interview with the co-founders, if you want to contact them here: http://gnhusa.org/contact/