Does this phrase has anything to do with our life ??

yes, it does have relevance to our lives...every minute every second that past is so precious in making our lives important...... it tells us to make the most of what we have at the moment... for no one can tell until when it is going to last...

Yeh! A different relevance for different kind of people, like A salaried man will say I shall only count the month to get my monthly salary. A man in jail would say "Count not months but the years to pass from the awarded 20 years." A rich & wealthy man who is earnins millions in moments would say, "Count not years or months too. let me finish my counting for the present moment and all the moments to come, could anyone help me counting my wealth. Though is my point of view I request you to understand the depth of the topic you started. All are not blessed like butter flies. few are just born to face the disasters only.