To all the rocks in your life...
 A philosophy professor stood before his class and had some items in front   of him. When class began, wordlessly he picked up a large empty mayonnaise   jar and proceeded to fill it with rocks, rocks about 2" in diameter. He  then   asked the students if the jar was full? They agreed that it was.  So the professor then picked up a box of pebbles and poured them into the   jar. He shook the jar lightly. The pebbles, of course, rolled into the  open   areas between the rocks. He then asked the students again if the jar was   full. They agreed it was. The students laughed.   The professor picked up a box of sand and poured it into the jar. Of   course, the sand filled up everything else. "Now," said the professor, "I
 want you to recognize that this is your life. The rocks are the important   things - your family, your partner, your health, your children – anything   that is so important to you that if it were lost, you would be nearly   destroyed. The pebbles are the other things that matter like your job,  your
 house, your car. The sand is everything else. The small stuff."   "If you put the sand into the jar first, there is no room for the pebbles   or the rocks. The same goes for your life. If you spend all your energy  and   time on the small stuff, you will never have room for the things that are   important to you. Pay attention to the things that are critical to your   happiness. Play with your children. Take time to get medical checkups.  Take   your partner out dancing. There will always be time to go to work, clean   the house, give a dinner party and fix the disposal."   "Take care of the rocks first - the things that really matter. Set your   priorities. The rest is just sand."