u have not learn from book, first of all u should learn yr self.
see what u have , earn or gain in yr life , its these all are yr own affords or achievement.
see which body u have that is not yr creation,
in which wind you breathe to live that is not yr creation
in which earth u stay that is n ot yr creation
in which sun or rain u enjoy or live that is not yr creation
even which name u take that is not yr th at all are gift of god
see how kind he and how lovely way he give u different happiness and how wonder universe he provide u to live . why bost and why cry, enjoy happiness and kind of god which he has been providing u without taking any thing else. smile and enjoy every moment of this precious life.