there is only several decades in our whole life. how to spend the period has become a key question in front of every one of us. no matter what you are doing,how much fortune you have and how top a official you are,the final result of your life is death! we must have clear brain about this. if you don't see the destination of your life,you will regret something you should have done but actually you did not do when the death comes . only those things you can do and like to do were carried out can you have a satisfaction about your whole life.