Naomi Watts feels her life is ''fulfilled''.

The 44-year-old actress - who has two sons, Alexander, six, and Samuel, five, with her long-term partner Liev Schreiber - insists she doesn't feel pressurised to land the best role going in a film because she's happy to take a back seat and enjoy more time with her family.

Speaking to OK! magazine, she said: ''I still feel very ambitious and you always want to find the next great project. But it's a very different feeling now than when I was struggling to get parts.

''Now I have a wonderful man and children to come home to, and waking up in the morning with my family is one of the greatest joys you can ever have in life.''

The blonde beauty portrays the late Diana - the ex-wife of Prince Charles and the mother of Princes William and Harry who died in a Paris car crash in 1997 - in the upcoming biopic 'Diana' and she admits she is concerned about the reaction she will receive from the public.

She explained: ''I was dreading the reaction among the public to my playing her. You know that people will complain that you don't look enough like her, that you're not tall enough, all those things. It's very difficult to play someone who had such a deep impact and left such a lasting memory on the public.

It's also more complicated and sensitive when you take into account her two boys. But I want to do her justice and help her story truthfully.