"Grit": How passion and perseverance lead to excellence

In her bestselling book "Grit: The Power of Passion and Perseverance," Angela Duckworth writes: "What we eventually accomplish may depend more on our passion and perseverance than our innate talent." Her book was just released in paperback. Duckworth joins "CBS This Morning" to discuss whether grit can be taught and how it can have a lasting impact on people's lives and achievements.