Everyone wants to be happy. Then why do people continue to be unhappy?

In the last 3 or 4 decades there has been rapid advancement in Science & Technology, Communication Media, Social Freedom, Avenues for Self-Expression, and Standard of Living, like never in the past. 

Yet people have become less alive, insecure, unclear, confused, conflicting, stressed, vain and unhappy. Most people’s lives are in a crisis.