This week on The Treatment, Elvis welcomes back director, writer and actress Sarah Polley, whose new collection of essays is “Run Towards the Danger:  Confrontations with a Body of Memory.” Polley’s films as a director include “Stories We Tell,” “Away from Her” and “Take this Waltz.” Polley tells The Treatment about her traumatic experiences as a child actor on the film set of “The Adventures of Baron Munchausen” and how those experiences still reverberate now as an adult director. She says she is averse to finding a rigid, inflexible narrative about one’s personality or experiences, but is open to revision and evolution over time. And Polley says it took a decades-long journey of health challenges to get her to a place of gratitude about her body.