Acclaimed actor Barry Keoghan told Ryan Tubridy on Friday's Late Late Show that he hopes the adversity he has overcome in his life will inspire other young people to achieve their dreams. 

The Killing of a Sacred Deer and Dunkirk star recounted how his late mother's struggle with drug addiction and his time in foster care had motivated him to make the most of his life.

"The drugs hit the area," said the 25-year-old Dubliner of his native Summerhill. "It affected all the families. She was one of them that got caught. We went into foster care. The families were good to us that we went to - went to a few of them."

In total, Keoghan said, he and his brother were placed together with thirteen foster families.  

"As a kid, you don't know what's happening," he explained. "You get attached and then boom: 'Let's move over here, let's move over [there]'."

He described the experience as "a weird one".

"It's only when you get older you can look back," he said. "You can get a bit of perspective on it." 

Keoghan's mother passed away when he was a child and he and his brother were then raised by their grandmother and their aunt, both of whom the actor paid tribute to as they watched his interview from the Late Late audience.

He also paid tribute to his late mother, telling Tubridy: "I've great memories of her. [I'm] Very proud of her." 

When asked by the host if he sees himself as "a possible role model for young people", Keoghan replied: "I mean, yeah, what I mentioned there - 13 homes, you know? If that was on paper you'd go, 'He's destined to mess up'." 

"But I went against it," Keoghan continued. "[I] Didn't dwell on it and used it as ammunition almost.

"I hope I inspire younger ones. Whatever you're into - sports, whatever - just go and do something."  

Looking to the future, Keoghan showcased the trailer for his new film, American Animals.

"It's a true story. It's a heist film - entertaining - it's unreal," he enthused. 

"With your positivity, your skill and everything that's going on in your world at the moment, I think you're going to be very successful," said Tubridy. "I want you to come back here when you start winning loads of awards and be a friend of ours." 

"I'll put the Oscar there," smiled Keoghan as he put his fist on the Late Late Show desk. "Put the other one there, and the other one there." 

American Animals is due for release in cinemas on Friday, September 7.

Watch Barry Keoghan's interview in full on the RTÉ Player.