Rather than promoting happiness, I think economic policy should seek to stamp out unhappiness. Things like infant mortality, poverty rates, disease, environmental pollution... are more easily quantifiable and actually easier to address from the point of view of policy than "happiness", which should be left to each individual or group to pursue as they see fit, with the role of government as an enabler, not as a prescriber of happiness recipes.

I expect Fran and Barbara (at least) to take you to task for calling Yoga a quasi-religion. I suppose you can take yoga and meditation as religions, or as centering techniques.

Those whom the Gods wish to destroy They first make mad. -- Euripides