"It goes by fast."

People tell me all the time--"It goes by fast."  Raising children, that is. It goes by fast. My oldest son's junior year of high school will be over soon, and he will be a senior. His final year in high school, and his last year at home. There are certain phrases like, "It goes by fast", that people have often shared with me, and it's clear to me that these sayings have been coined from experience and truth. And now, I reach another point in my life's journey when such a phrase has proven to be true.