United Kingdom, March 14 -- Rosamund Pike rues not being more "strategic" with her career after starring in Gone Girl.

The 47-year-old star earned an Oscar nomination for Best Actress for her role in the 2014 psychological thriller but admits that she was "sort of insane" to take herself out of the spotlight for 18 months afterwards as she had recently welcomed her youngest son Atom, 12.

Rosamund - who also has son Solo, 14, with her partner Robie Uniacke - told The Sunday Times newspaper: "I'm not very strategic in terms of my career, making sure I am in the right place, meeting the right people.

"I made Gone Girl, I got pregnant, I wasn't there to do all the schmoozing and ride the whole shebang. I could have been so much more strate...