From her breakthrough in “Kick-Ass” through great roles in “Let Me In,” “Hugo,” and “Carrie,” Chloë Grace Moretz has become one of the hottest young actors in Hollywood. She talks about her decision to take time to “reassess who I am and find myself within my roles again,” which led to her brilliant performance in “The Miseducation of Cameron Post." She also talks about avoiding what she calls “emotional cavities,” and how she craves to be taken off guard in her performances.