"Knowing that someone would always be counting on me made me a better person," Berry, 52, wrote. "I’m more focused and in line with my values and my goals I stopped letting negativity get me down."
"Plus, I loved being pregnant! Had I started earlier, I probably would have had five children," she confessed. "Or if I hadn’t been busy trying to make movies, I would have been the perfect surrogate."
The actress explained that she felt "so alive" with her "purpose and my femininity" when she was pregnant, adding that she felt like her body was "doing what it was built to do."
Berry shares 11-year-old daughter Nahla with ex-boyfriend Gabriel Aubry and 5-year-old son Maceo with ex-husband Olivier Martinez.
She said her kids aren't impressed with her star power at all.
"Being a mom is the best job, but my kids don’t care about who I am outside of this house," she noted. "My daughter got a sense of who I am from friends at school. And — this is funny — for the last year, my son has been saying my full name really loudly in public like, 'Halle Berry, can you pass me the ketchup?'"