Facebook COO Sheryl Sandberg looks at why a smaller percentage of women than men reach the top of their professions — and offers 3 powerful pieces of advice to women aiming for the C-suite.

Brené Brown studies human connection — our ability to empathize, belong, love. In a poignant, funny talk at TEDxHouston, she shares a deep insight from her research, one that sent her on a personal quest to know herself as well as to understand humanity.

Simon Sinek (@simonsinek) created a simple model, The Golden Circle, that codifies what makes the most inspiring people and organizations so successful and influential. Beginning as a student in anthropology, Simon Sinek turned his fascination with people into a career of convincing people to do what inspires them.

Watch Laura Sicola’s talk to learn how to hone your “vocal executive presence” and make your desired vocal impact!

In this fun and personal talk, Caroline shares a story of moving from stage-paralysis to expressive self. Accompanied by an unusual prop, she encourages us to use our voice as an instrument and really find the confidence within.

Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy argues that “power posing” — standing in a posture of confidence, even when we don’t feel confident — can boost feelings of confidence, and might have an impact on our chances for success.

In a culture where being social and outgoing are prized above all else, it can be difficult, even shameful, to be an introvert. But, as Susan Cain argues in this passionate talk, introverts bring extraordinary talents and abilities to the world, and should be encouraged and celebrated.

Stress. It makes your heart pound, your breathing quicken and your forehead sweat. But while stress has been made into a public health enemy, new research suggests that stress may only be bad for you if you believe that to be the case. Psychologist Kelly McGonigal urges us to see stress as a positive, and introduces us to an unsung mechanism for stress reduction: reaching out to others.