If Happiness is crucial or intimate like our DNA as Layard then why are we still unhappy?

Now if we think about it our reading so far provides us with ample answers as to what constitutes or comprises our happiness/unhappiness, such as the Hedonistic Treadmill, search for increasing income, family, the Big Seven, looking for love etc. Do you think that Layard offers the final words on these various subjects or is there something else that you believe is a crucial component or components to yours and everyone's happiness and joy?

What is your personal formula for happiness? Also, in "Words Can Change Your Brain", we can see how one word can change our thought patterns and eventually change the very dimension of our brain. Do you see any connection between what is being stated in this book and Amy Cuddy's Ted Talk that body alterations can change your destiny? The key subtext to Professor Cuddy's talk is what are you communicating to yourself and others though your body language? Here is a link to her talk as a

reminder: https://www.youtube.com/watch?v=Ks-_Mh1QhMc

Please use (concrete examples) from the videos or the reading (that means using page numbers, quotes) as support or to critique where you feel that Layard may have gotten it wrong for example.