Jessica Alba says she is less self-absorbed now she has become a mother.

The Spy Kids actress gave birth to baby Haven in August of this year and is already mother to three-year-old Honor Marie.

But she has told InStyle Australia in their January issue that it is a good thing she had children because she now doesn't focus so much on herself.

"I felt completely different," she revealed about having her first baby. "I really came into myself as a person. Before I was always working for my identity."

"And then you take the focus off of yourself. I was probably, definitely, a bit of a narcissist.

"When you are young and an actor and driven, it's a bizarre state of mind to be in at times. I was so focused on things that didn't matter at the end of the day.

"Now I have what I do for a living in perspective. Working was everything to me, my entire identity, and once I got to step away from it, everything changed."

But Jessica also says that she "felt she would crack" under the pressure of being a mother.

"It's overwhelming," she shared honestly. "I don't consider myself a lot of the time. I think a lot of mums do that, try to be everything to everyone all the time. I make mistakes. I do try to do way too much."

Jessica raises her two girls with director husband Cash Warren who she has been married to for four years.