Geena Davis is no stranger to the spotlight. But in her new memoir, Dying of Politeness, the Academy Award-winning actor remembers growing up full of insecurities and self-criticisms. She tells Rachel Martin that acting gave her the "ability to be somebody else" – and over time, she gained her confidence by watching none other than her Thelma and Louise co-star, Susan Sarandon, walk through the world with her head held high.