One of the best books I've read in the last year is Gretchen Rubin's book 'The Happiness Project'. It was filed with great facts, it was written in a wonderfully personal style, and left me feeling happy!
What more could you ask for!?
Today I saw from her facebook feed that she was interviewed on her book together with Dr Ian Smith (a medical doctor who wrote a book on the science of hapiness).
Watch the video below. It is a great introduction to the topic.
And, here's a previous post I wrote on Gretchen Rubin's book.