The 39-year-old actress isn’t nervous about hitting the milestone age next March because as she has gotten older her confidence has grown.
She said: I just think that things get easier as you get older and wiser and more experienced. You get more confident about who you are as you get older. I find that really comforting.
Rachel who has a three-year-old son, Henry, with her filmmaker fiance Darren Aronofsky believes her twenties were the worst decade of her life, because she was struggling to make it as an actress and find her identity.
The Oscar-winning actress added: Being 20 is excruciating, at least it was for me. In your thirties you get more confident about who you are and that is a relief, so imagine what the forties will be like!"