"There's no difference to playing any other team, really, whether it's going to be Liechtenstein or Japan or England or Argentina," said the Liverpool midfielder.
"You go out in the same mind. It doesn't matter who you are playing against.
Kewell insists the key to Australia's chances is ensuring they all remain relaxed in the build-up to the weekend clash.
"I think that's the Australian way, you know, take it easy."
"There's no point wasting energy. The game's not until Sunday, so why start getting pumped up now?"