During her life, Katherine veered away from the spotlight her parents had lived in, working as a licensed clinical social worker after graduating from New York University followed by a master’s degree at University of Southern California. 

Throughout her career, Katherine became an "expert in crisis management, advocacy, connecting clients to resources, individual therapy, group psychotherapy, and supporting family members and loved ones of persons with severe mental illness or substance abuse," per her profile. 

In fact, none of Martin and Nancy’s kids followed their parents into the spotlight—much to Martin’s lighthearted chagrin. 

"None of them wanted to go into show business, and I pushed them," the pillar of Hollywood joked during a 2012 appearance on Conan. "I wanted them to go into show business. I make them do laps in the morning and I go to the balcony with my coffee and say, 'Quitter! Do it again!'"

But that commitment to joy—even in the darkest of times—is a throughline of Marty, Life is Short, brought to life by production company Imagine Documentaries. 

As John Mulaney tells cameras, “Marty showed me it’s very important how you carry yourself through all these experiences. Marty is good at life.”

For more insight into Martin’s most joyful times with his family, read on.