Los Angeles, Aug. 24 -- Actress Leslie Mann has opened up about her nearly 30-year marriage to filmmaker Judd Apatow, saying that accepting the challenges of a relationship rather than comparing it with others has helped sustain their bond, according to E! News.

Mann, who married Apatow in June 1997, said the key is to acknowledge the difficulties that come with marriage. "You just accept how hard it is, and not trying to fool yourself," she said on the recent episode of Kylie Kelce's 'Not Gonna Lie' podcast. "That's the secret." She added, "It's really hard."

According to E! News, the 'This Is 40' star said she sometimes feels insecure about her marriage when she hears other couples describe their relationships as perfect.

"I feel bad...