Demi Moore was a troubled member of the “Brat Pack,” who overcame esteem issues to become the highest-paid actress in Hollywood, starring in films like “Indecent Proposal,” “Charlie’s Angels” and “Striptease.” Her latest, “The Substance,” is about an aging TV star who finds an ominous potion that can give her a younger, more perfect version of herself, but at a horrific price. Moore, now 61, talks to correspondent Tracy Smith about how she had suffered to meet the entertainment industry’s toxic expectations of beauty for female actresses; and how today she tries to focus on what really brings her joy.