To realize..

To realize the value of one year,

             ask a student who has failed his exam.

To realize the value of one month,

       ask a mother who has given birth to a premature baby.

To realize the value of one Week,

            ask an editor of a weekly magazine.

To realize the value of one day,

             ask a daily wage laborer.

To realize the value of one hour,

            ask the lovers who are waiting to meet.

To realize the value of one minute,

             ask a person who has missed the train.

To realize the value of one second,

             ask a person who has survived an accident.

To realize the value of one millisecond,

            ask the person who has a silver madal in Olypics.