The Happiness Advantage: The Seven Principles of Positive Psychology That Fuel Success and Performance at Work, by Shawn Achor (positive psychology, happiness, Havard Univeristy, TED talks)

In contemporary society, people who are overwhelmed by workload, pressure and negative emotions expect to be happy after becoming successful. As a result, they constantly sacrifice happiness for achievement. However, psychological research has found that putting success before happiness makes it harder to achieve our goals. On the contrary, if happiness comes first, it gives us an enormous competitive edge on the path to success. A positive mindset, thinking pattern and behavior can help us achieve extraordinary results in our work and life.