Everyone has only one youth，it will never turn back when it has gone.Sorrowly,many of us can't understand it until they have missed it.But at that moment,it is too late.

   So,we should make full use of our youth,and try our best to make ourselves successful men or women.When we are young,we should work hard both in school and workplace.Only by this way,can we achieve success.At the same time,we should also value the important things we already had,such as family,love,friendship and so on.For these are valuable in a person's life,and they are useful for searching success.

   In one word,it is no use to cry for the spolit milk.We should never waste our youth.Or,we will regret for it one day.