Being human is the super creature on this earth ,he should think about the harmony of the life activities with a contentment in the mind to lead a life of peace.But on these thoughts human is effected by some negative things like ego,anger, greediness etc. So it is the usual thought comes one's mind that if  human is the super creature, then why is he so afflicted by such a negative things? on actual judgement any person may come to the conclusion of the right which phenomenon is otherwise termed as conscience, but usually a man is deprived of gaining the right judgement as in case of Arjuna in the battle field could not take the right things to do.He was in dilemma whether he should kill the enemies who are the near and dears of his own relative circle.