Daily Leap Career Video of the Week: What Trait is Necessary for Success?

Each week we present our Daily Leap Career Video of the Week. The video we share presents news or advice related to career development, searching for a job, the economy and employment, and other career-related topics.

Today we focus on the trait most necessary for success. This trait is not social intelligence, high I.Q., good physical health, or good looks. In this video psychologist Angela Lee Duckworth discusses the trait she's identified in research as the most responsible for success. 

What do you think that trait is?