"I'm somebody who just always wants to be happy aways," she says. "It doesn't take that much to make me happy, which is also why being sad, it doesn't make sense" She's been in and out of rehab for the past few years; her new book comes out this month.
Amy Koppelman penned A Mouthful of Air, a powerful novel years ahead of its time—and now, 20 years on, she discusses the film version of it she directed that hits theaters this month.