The sadness of the fifth size. Why are we unhappy and how to fix it

Have you ever noticed that in childhood the feeling of happiness was much sharper? What secret did we forget, becoming adults? Or, more precisely: what did we not know in childhood, but we know now - and this knowledge harms our happiness?
Imagine a scale. At its extreme right point there is happiness, in the extreme left - deep dissatisfaction with life. Doctor of Philosophy and Professor of the Texas University School Raj Ragunatan is convinced that everyone can consciously move on this scale towards well -being. To do this, it is necessary to eradicate "7 mortal sins against happiness" and pump 7 habits of happy people that the author describes in this book.
The book also comes out under the name "If you are so smart, why unhappy. Scientific approach to happiness"