When it comes to success, it’s easy to think that people blessed with brains are inevitably going to leave the rest of us in the dust, but social psychologist Amy Cuddy knows first-hand how attitude can outweigh IQ.

Cuddy suffered a car accident at the age of 19 which resulted in brain damage that took 30 points from her IQ. Before the crash Cuddy had an IQ near genius levels; her post-crash IQ was just average.