United Kingdom, Jan. 29 -- Drew Barrymore only found "purpose" in life once she became a mother.

The 49-year-old actress enjoyed years of Hollywood stardom before she had Olive, 12, and 10-year-old Frankie with her now ex-husband Will Kopelman but admitted that her "priorities" changed once they arrived.

Speaking on 'The Late Show with Stephen Colbert', she said: "[My daughters] are really, really good. Every day is different. Every hour is different. They're my North Star, my compass.

"I love that in the life that I got to live before I knew them, my priorities were different. And ever since I came into the world, I understand what the purpose of my life is. It's wild."

The talk show host added that she became "humbled " when she rea...