The 46-year-old actress, who raises five-year-old daughter Valentina with husband Francois-Henri Pinault, says she loves being a mother but admits it can be difficult, reported Showbiz spy.
"When you become a mum and are responsible for someone else's welfare, everything is about being the best mum and that's a huge challenge on a daily basis.
"Because when you believe that you already know how to handle them, they become different. They change and evolve constantly but still depend on you. Sometimes you can't even go to the toilet alone because they are always after you. It is a massive challenge, and not easy at all, but it is also the most beautiful goal of a lifetime," she said.
Hayek said if needed she would be prepared to quit acting for the sake of her daughter.
"It's working out really well. (Valentina) is really smart, and she's really young. If later on it gets in the way of her development, I'll just stop working. For right now, it works. I work mostly in the summers. I usually work in the Sandler family or with Kevin James," she added.
