Once at workshop, a time management expert stood in front of the group he was presenting to and said, "Okay, time for a quiz."

He pulled out a one-gallon, wide mouthed mason jar and set it on a table in front of him. Then he produced a dozen large rocks and carefully placed them, one at a time, into the jar. When the jar was filled to the top and no more rocks would fit inside, he asked, "Is this jar full?" Everyone in the group answered, "Yes."  read more