The reality of a decision Ben Stiller made still bites him all these years later.

In his new documentary Stiller & Meara: Nothing Is Lost —which looks back at the relationship between his parents Jerry Stiller and Anne Meara —the comedian reflected on his own journey as a parent . And that journey has included a major misstep involving his and wife Christine Taylor ’s daughter Ella Stiller .

"I cut you out of Secret Life of Walter Mitty ,” Ben, 59, shares in the documentary, per Entertainment Weekly . “ It's probably the worst decision I ever made in my life.”

Luckily , Ella, now 23, has moved past not being in the 2013 film—where she made a brief appearance as a young Odessa Mitty, the little sister of her da

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