To realize the value of one hour, ask the lovers who are waiting to meet. To realize the value of one minute, ask the person who missed the train. To realize the value of one second, ask a person who just avoided an accident. To realize the value of a millisecond, ask the person who won a Silver Medal at the Olympics. Remember, time waits for no one.
Yesterday is history.
Tomorrow is a mystery. Today is a gift. We don't know what medical problems lie ahead of us. Don't let time be our enemy. Use the present for the purpose it was given to us.