to realize...

the value of a sister, ask someone who doesn't have one.
the value of ten years, ask a newly divorced couple.
the value of four years, ask a graduate.
the value of one year, ask a student who has failed an exam.
the value of nine months, ask a mother who gave birth to a stillborn.
the value of one month, ask a mother who has given birth to a premature baby.
the value of one week, ask an editor of a weekly newspaper.
the value of one minute, ask a person who has missed the train, bus or plane.
the value of one second, ask a person who has survived an accident.
the value of a friend or family member, lose one.

Time waits for no one. Treasure every moment you have. You will treasure it even more when you are able to share it with someone special.