Declared by The New York Times as “America’s Quintessential American Ballerina,” Susan Jaffe was a principal dancer of American Ballet Theatre for 22 years, beginning in 1980. She appeared prominently in the international dance scene and frequently danced with Mikhail Baryshnikov. She had a long and very successful career in ballet, which she attributes to specific steps of self-discovery — based on scientific principles — that she practiced to elevate her career. Ms. Jaffe