Nicole Kidman is said to be focusing on "family and work" after filing for divorce from her husband of 19 years

Now back in Nashville following a recent trip to Europe, she is said to be "keeping it positive".

The source added: "She isn't someone who dwells on regrets - she believes everything happens for a reason."

News of the couple's separation broke on 29 September, and court documents confirmed that Nicole filed for divorce the following day, citing irreconcilable differences.

The filing listed the couple's official date of separation as 30 September.

Nicole and Keith married in 2006 and share two daughters - Sunday Rose, 17, and Faith Margaret, 14.

According to People, Nicole requested to be the primary residential parent as part of the divorce proceedings.

A source close to the actor-producer said: "She has a great attitude and feels very grateful for her life. She has several work projects coming up and is looking forward to them."

Nicole's forthcoming screen work includes television adaptations of Margo's Got Money Troubles and Scarpetta, as well as a third season of Big Little Lies and a sequel to the 1988 film Practical Magic, in which she will reunite with Sandra Bullock.

Nicole announced on 13 September via Instagram that filming for Practical Magic 2 had officially wrapped.

In an interview with Harper's Bazaar, published shortly after the divorce filing, Nicole appeared to reflect on the emotional challenges of separation.

She said: "There's something to knowing that no matter how painful, or how difficult, or how devastating something is, there is a way through. You are going to have to feel it, and it's going to feel insurmountable at times. You're going to feel like you're broken, but if you move gently and slowly - and it can take an enormous amount of time - it does pass."

Another source close to the family told People on 2 October Nicole had been "stressed because she knew the separation would eventually become public and she was dreading it".

They added: "But she's surprisingly level-headed and calm. Now that it's out she's just focused on what's ahead and her girls."

A separate insider previously told People Nicole "has been fighting to save the marriage", saying: "She didn't want this."

The source added "the entire Kidman family has come together to support one another", particularly her sister Antonia Kidman.