Answer:
Time is among the very few things that once lost can never be recovered. Think about it: the average life of a person is just a reservoir of 2.4 billion seconds or 75 years in first world nations, where life expectancy is quite high. The situation is worse in third world nations. So, each passing second our reservoir sheds time, just like in an hour glass.
Unfortunately, most people do not realize how precious time is until in later years of their lives. Money lost can be recovered; trust broken can be amended; opportunity lost can be replaced by another opportunity. However, when time is lost it has gone forever. So, what makes time very precious that we have to make the best out of it?
Here's some answers.