to began with,it should be realized that nothing seek,nothing find.as a social being,self-devdpment is of importence.a definite goal,which is bases on personal interests and abilities,must be set up so as to make our ideal come ture.what*s more,we should bear the proverbs in mind that"romas was not built in a day."and “every little makes.”nothing could be achieved overnight.and to achieve one*s goal is no exception .it need a process and constant efforts.in sum,drops of water outwear stone.