On Bliss and Gratitude (DVD)
Om Mani Padme Hum, Discourse 2; 1 hr. 27 min.
Blissfulness is not an expression of gratitude; on the contrary, gratitude is an expression of blissfulness.
Osho also answers one additional question: You are carrying a god within you, and you have to discover this god. This is the only miracle I believe in, the only magic. Everything else is non-essential.