The 50-year-old actor admitted he only ended up living in Australia because he wasn't sure what to do with his life.
"Like most young men and women who graduate high school, you are not sure what you want to do.
"My mum decided, 'Go and be an exchange student.' It was between Sweden and Australia. Australia spoke English. I was here two weeks later, on the outskirts of Sydney."
McConaughey, who has three children with wife Camila Alves, is incredibly happy with his life now.
Asked where he'd like to be in a decade, he said: "Right now, I'd say I want more of what I've got going. I'm happy, I'm healthy, I'm happy, my family is healthy. My wife doesn't want to change me too much. Kids seem to like me...[they] listen to me pretty much most of the time."