More on Happiness

Interesting Ted Talk about happiness; the earlier pessimism of it and Nancy's defining of it.
http://www.ted.com/talks/nancy_etcoff_on_happiness_and_why_we_want_it.html

Cognitive researcher Nancy Etcoff looks at happiness -- the ways we try to achieve and increase it, the way it's untethered to our real circumstances, and its surprising effect on our bodies.