OK, it's a bit harsh. But it's true. All of them concern the passing of time. Tick-tock goes the clock. Rise and shine, for the early bird gets the worm.
Time waits for no one.
Back in the days of junior high school, I had to attend seminars on time management. Bah humbug, whatever, shaddap and let me get out of class early. Hell, I wish I spent less time on the computer screen too, but that's another regret. If I was organized, I could put down a wad of cash for a Palm Pilot or use my Day Runner organizer. Anyway, you have to manage time.