A philosophy professor stood before his class, when class began he wordlessly picked up a very large and empty jar and proceeded to fill it with rocks.
He asked the students if the jar was full. They all agrees that it was.
He then picked up a box of pebbles and poured them into the jar. He shook the jar lightly, and the pebbles, of course, fell into the spaces between the rocks.
He then asked the students AGAIN if the jar was full. They agreed it was.
The professor picked up a box of sand and poured it into the jar. Of course the sand filed up everything else.
With a unanimous YES the students agreed the jar was full this time.
The professor then says “This jar represents you life. The rocks are the important things - your family, your partner, your health, and children -the things that, if only they remain, your life would still be full.The pebbles are the other things - your house, job, and car. The sand is everything else.”
If you put the sand first, there is no room for the other pebbles and rocks. The same goes for your life. Take care of the rocks first, the things that really matter, and the rest is just sand