Because if you don’t you are an arrow without the target. The purpose of life is the most important concept for a person to understand. Life is the bundle of energy. Energy makes the work possible. Without the target task the energy consumed becomes the dead energy. The dead energy in turn sticks with an organ and starts consuming it, like a black hole. When a person realizes his or her target tasks, the energy starts flowing towards the objective and fulfill the task. Success is getting what you want in your life but if you don’t know what you want, you still get but not what you worth. It is a must to acknowledge what one wants in their life.