Matthew McConaughey's piece of relationship advice that keeps his marriage to Camila Alves strong

Matthew McConaughey is sharing the key to making his marriage work.

During a recent interview with Fox News Digital, the 56-year-old actor spoke about his new film, "The Rivals Of Amziah King," which arrives in theaters on Aug.

14, and the biggest lesson he learned that has contributed to his decades-long marriage.

"You got times where one seems to be affirming and sprinting ahead," he said.

"And you got times when somebody else may be a little more insecure or a little more unstable on their feet about their choices and what they're doing." He explained that when in a relationship, it is important to "try not to get too much of a gap between those two" stages.

THOMAS RHETT REVEALS WHY HE AND WIFE LAUREN REJECT CELEBRITY PERKS FOR COUNTRY LIFE "Is there a way to go, 'I'll slow down so you can catch up, or 'You slow down so I can catch up a little bit?'" he added.

"Not asking you to not be in the lead because I want you to be in the lead because when the fire's hot, keep it burning.

Go, go, go, go, go.

But just keep me in arm's length over here.

Keep me in arms length." WATCH: Matthew McConaughey's piece of relationship advice that keeps his marriage to Camila Alves strong McConaughey and Camila Alves got married in June 2012, six years after they first met in a nightclub in West Hollywood in 2006.

Over the course of their relationship, the couple has welcomed three kids together; sons Levi, 18, and Livingston, 13, and daughter Vida, 16.

In his new film, also starring Kurt Russell and Cole Sprouse, the " Dallas Buyers Club " star plays Amziah King, a musician, beekeeper and pillar in his community in Oklahoma whose life is turned upside down when his former foster daughter returns as he is also dealing with threats to his honey business.

CLICK HERE TO SIGN UP FOR THE ENTERTAINMENT NEWSLETTER While the actor grew up in Texas rather than Southeast Oklahoma, he was able to relate to his character in the movie, as "it's got a lot of the same characters in it" as he saw growing up.

WATCH: Matthew McConaughey says new movie characters remind him of people he knew growing up in Texas "There's a lot of people in a lot of places all across the United States where music is how you communicate, it's how you survive, it's how you keep belief alive, it's how they keep hope alive, because if you look at logic, and you look at the facts every single day, all we got to do is look at the news," he said.