Kristen Bell: How Motherhood Has Changed Me

— -- Kristin Bell is opening up about how motherhood has changed her.

Bell has two daughters with Lincoln, 3, and Delta, 1, with husband Dax Shepard, and is an ambassador for the Global Moms Relay campaign, which raises money and support for moms and babies around the world.

The "Frozen" actress told ABC News why the campaign is so important to her.

"It became clear to me when I became a mom how small actions lead up to results," Bell said.

The Global Moms Relay campaign, a joint venture for the UNF and Johnson & Johnson, has been asking moms what they wish were true for every child, everywhere, and for Bell, the answer is health and safety.

"I tend to favor health and safety first because I think without that, there are just no possibilities for kids," Bell said. "If a child can’t receive vaccinations or be safe in his or her community, there are no possibilities for them, and I, for one, really care about the health and safety of our children and work hard to make sure they have health and safety."

Bell, 35, stars the upcoming film "Bad Moms" with Mila Kunis and Kathryn Hahn, which tells the story of three mothers who ditch their conventional parenting responsibilities for self-indulgent fun.

Bell agreed that all moms "deserve to be spoiled," but revealed that in her life, spending time with her kids is how she chooses to indulge herself.

"When I feel spoiled is when I’m with them," Bell said. "I don’t wish for a night on the town.

"Because I’m a working mom, really all I want to do is shut my phone off and lock my doors," she continued. "I don’t wear makeup, nobody’s wearing shoes, we’re running around the house being carefree and having no responsibilities to the outside world."

Watch Bell's Global Moms Relay campaign video below: