A professor stood before his philosophy class with several items in front of him. When the class began, he wordlessly picked up a large empty mayonnaise jar and proceeded to fill it with golf balls. He then asked the class if the jar was full. They agreed that it was.
The professor then picked up a box of pebbles and poured them into the jar. He shook the jar lightly and the pebbles rolled into the open areas between the golf balls. He then asked the students again if the jar was full. Again they agreed that it was.
He then picked up a box of sand and poured it into the jar. Of course the sand filled the space between the pebbles. He asked once more if the jar was full. The students responded with a unanimous "yes".
The professor then produced 2 glasses of wine and poured them into the jar. The students laughed.
"Now", said the professor, as the laughter subsided, " I want you to recognize that this jar represents your life. The golf balls are the truly important things: your family, your children, your health, your friends, your favorite passions; things that if everything else were lost and only these things remained, your life would still be full.
The pebbles are other things that matter like your job, your house, your car. The sand is everything else - the small stuff. If you put the sand in the jar first," he continued, "there is no room for the pebbles or the golf balls. The same goes for life. If you spend all your time and energy on the small stuff, you will never have time for the things that are important to you and critical to your happiness."
One of the students raised her hand and asked what the wine represented.
"I'm glad you asked," said the professor. "It just goes to show you that no matter how full your life may seem there is always room for a couple of glasses of wine with a friend.