A rare glimpse into the family life of 'Star Wars' icon Mark Hamill

Marilou Hamill sat down with ABC News for a rare look into her family's life.

One of the keys to a marriage surviving in Hollywood, according to Marilou Hamill, is to … stay out of Hollywood.

The Hamills will celebrate their milestone anniversary in December, in an industry where four decades of marriage is a rarity.

The couple also has three grown children, sons Nathan and Griffin, and daughter Chelsea, who works as her father’s assistant.

“It’s fun to be together like this. As you get older, you start treasuring the times you get to spend with family,” Chelsea said.

“I think it was nice to have a chance to reconnect and these films really brought that back,” said Chelsea.

Her father agreed.

“Rather than being sorry that we can’t have more of her,” Mark Hamill said, “I’m just grateful that we had the time with her that we did.”

ABC News and Lucasfilm are both part of parent company Disney.