Over the last 20 years, the world economy has evolved at great speed. Globalizationinduces rising competition and the knowledge economy induces rising cooperation. Despite these two evolutions, different paradoxes seem more and more important in daily life. The gap between being potentially happy and the reality of happiness hasnever been as wide as today. In order to solve this problem, some authors recommend using “economic war” tools to increase their power on the world market(Baumard, 2012 ; Harbulot, 2014). On the contrary, others dream of a rising human development where everybody could increase the happiness in life (Morin, 2011, Attali, 2013). This paper proposes a new vision mixing cooperation and competition approaches in order to propose a new way of thinking and acting for the individuals and the organizations of a world knowledge economy. In the first part, the paper analyzes how recent world changes evolve to use a complexity theory in order to propose the qualitative inter- dependences which exist between the economic and social efficiency. In the second part, the paper demonstrates that the individual strategies of the agents created in order to increase happiness, could also induce long run collective strategies in order to increase the long run innovation for the society as a whole. In the third part, the paper proposes some short run action in order to reach a greater economic and social efficiency forall agents.