Life Lesson #32: (I obviously didn't create this one, but I always point out when they're not from my own thoughts -- and they're always of my own phrasing. )
Parkinson's Law: Prioritizing your work (effective time management) is like accessing water ; if you don't tap it correctly, you'll be flooded with wasted water.
A more humorous version:
Time is like oxygen ... most people don't notice it unless they need it :-)
Definitely a life lesson :-)