Five Why's: How Asking 5 Questions Allowed Me to Eat Dinner With My Kids, by Charles Duhigg, the New York Times
Adam Rifkin stashed this in Productivity
They started by identifying a problem -- they never managed to have family dinner -- and by using "the Five Whys" found a root cause: The kids were taking too long to get dressed in the morning.
Before doing the analysis they never made a connection between morning routines and evening mealtimes.
But once they forced themselves to ask why after why, it was clear what needed to change.