Many skilled people excel at single loop learning where they become accustomed only to success. 

They aren’t used to failing, so they struggle to learn from their mistakes and often respond by blaming someone else.

“their ability to learn shuts down precisely at the moment they need it the most.”

The first time we aim for a goal, follow a rule or make a decision, we are engaging in single loop learning. 
If we question our approaches and make honest self-assessments, we shift into double loop learning.  Here we assess our biases, question our mental models, and look for a...