TED Talk (http://www.ted.com/talks/angela_lee_duckworth_the_key_to_success_grit?language=en)

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.