The Dalai Lama discussed wealth with a Kildare church, saying "The ultimate source of happiness, peace of mind, cannot be produced by money. Billionaires, they are, I notice, very unhappy people. Very powerful; but deep inside, too much anxiety, too much stress."
Even though His Holiness wakes up at 3:30 a.m. every day, he always gets eight or nine hours of sleep, which he attributes to the peace of mind afforded by meditation. He has previously written about happiness in his excellent book The Art of Happiness (which celebrated its tenth anniversary a few years ago), a fact which puts Action for Happiness right in his wheelhouse.
(Read more about what Action for Happiness is doing by clicking my Action for Happiness tag.)