• Drew Barrymore says she has one mantra that helps her feel calm at home. • "Your head is as messy as your room is. Someone said that to me, and it changed my life forever," she said. • Besides teaching the value of tidying up, she says she wants to normalize therapy for her daughters.

For Drew Barrymore, tidying up is all about clearing her head.

In an interview with Real Simple published on Wednesday, Barrymore spoke about the lessons she hopes to pass on to her two daughters, whom she shares with her ex-husband, Will Kopelman.

In addition to teaching them the importance of being kind to others, Barrymore says she encourages them to see the value of caring for their environment.

"And I've taught them that if you clean up after yourself, you're going to have more calmness in your

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