And the key to success is?

Leaving a high-flying job in consulting, Angela Lee Duckworth took a job teaching math to seventh graders in a New York public school. She quickly realized that IQ wasn't the only thing separating the successful students from those who struggled. Here, she explains her theory of "grit" as a predictor of success.

You may also want to listen here for Angela Duckworth's NPR interview. 

Peace, Love & True Grit.