Amy Cuddy is a Harvard Business School social psychologist who studies how non-verbal behaviour and snap judgements affect people from the classroom to the boardroom.
Her TED talk, 'Your Body Language Shapes Who You Are' has been immensely popular, attracting more than 31 million views since 2012.
Her recent book, Presence - talks about bringing your boldest self to your biggest challenges.
Amy Cuddy says our body language not only affects how other people see us, but also it may change how we see ourselves.
At Harvard, Amy teaches MBA, executive education, and doctoral courses on power & influence, leadership, and decision-making.
She talks to Lynn Freeman.