Nicole Kidman learned to take a step back when her husband fought through his addiction.

The 'Eyes Wide Shut' star supported her husband Keith Urban when he checked himself into rehab in 2007 for alcohol addiction and admits it was tough to tell him she couldn't fix it for him and he had to be the one to make a change.

Speaking in The Jess Cagle Interview, she said: ''[I'd advise them] to get help. To put your hand up, to reach out. There is absolutely help out there. You can't save somebody, they've got to save themselves.

''It is a very big thing for people like me who go, 'I can take care of you. I can do it.' At some point, you just have to say, 'I love you and I'm here when you decide to do the work. If you don't, then that's it.' It's not easy, but there's an extraordinary life if you do get there through help.''

And Keith completely understood Nicole's standpoint and found it ''deeply inspiring''.

Speaking in 2007, he said: ''Nicole listened to her heart and did what she felt was the right thing to do. To see that kind of love in action, that's very moving and deeply inspiring and just makes me want to be a better man.''

Meanwhile, things have gone from strength to strength for the couple - who have Faith, five, and Sunday, eight, together - and Keith has praised Nicole for being an ''incredible'' mother.

He said: ''[She's] an incredible mom. Loving, maternal, and [she's] teaching me a lot about how to raise children, especially girls. I have no reference for girls. I grew up in a house of boys, so it's quite the learning curve.''

And Nicole previously revealed her two children give her advice on what outfits she should wear to pick them up from school.

She shared: ''I would go to the school to pick them up, and they'd be like, 'Please don't pick me up in sweatpants or jeans,' They're like, 'Can you just get dressed up and do your hair and put on makeup and wear heels?'''