For Christine Blackburn, the youngest of six kids growing up in Pittsburgh, the idea of living in Los Angeles and working in the entertainment industry seemed like a dream (or at least something you only saw on television). Instead she took a circuitous route-first as a flight attendant, then in the Peace Corps-with some unforeseen setbacks: a rare cancer diagnosis at age 31. With a survivor's renewed sense of urgency, Blackburn finally found the...