Nicole Kidman thinks Keith Urban is the “best thing” to ever happen to her. The Oscar-winning actress – who has Sunday, 13, and Faith, 11, with Keith – has been married to the musician since 2006, and she believes he’s transformed her life. She shared: “I met him later in life and it’s been the best thing that’s ever happened to me. That man is the best thing that’s ever happened to me.” Nicole, 54, was married to actor Tom Cruise between 1990 and 2001, and has kids Isabella, 29, and Connor, 27, with the Hollywood star. However, Nicole believes she’s found the perfect match in Keith, 54. She t…