The singer-songwriter opens up about her the new Showtime documentary, ‘Sheryl,’ which traces her journey from elementary school teacher to musical superstar responsible for classics like “All I Wanna Do,” “Soak Up the Sun,” and “My Favorite Mistake.” The film documents her battle against sexism, agism, and at times her own perfectionism, but ultimately it’s a story about finding happiness on her own terms. Crow discusses her early years of fame, her writing process, and what it’s been like to look back.