United Kingdom, March 13 -- Sadie Frost was "really knocked" by her public divorce from Jude Law.

The 59-year-old actress separated from 'The Holiday' star, 52, in 2003 after six years of marriage, and while Sadie now feels she "has excelled so much more" being single, she admitted the separation was a real challenge at the time.

During an appearance on the 'My Life in a Biscuit Tin' podcast, she said: "I'm feeling really happy and content at the moment. I feel confident. It took me a long time not to care about what people thought.

"I had very low self-esteem. It really knocked me going through a very horrible, public divorce. I've excelled so much more since I haven't been with somebody because I think there's a constant thing of hav...