(Photo Credit: Mini Magazine)

Since becoming a mother, "Girls Next Door" star Holly Madison says her partying days are long behind her.

"I am much more selective about the appearances I do because of the time it takes away from Rainbow," she told the fall issue of Mini magazine about her 18-month-old daughter. "I can't be this Tasmanian devil, whirling around to party after party every night anymore."

Hugh Hefner's ex welcomed her first child with now-husband Pasquale Rotella in March 2013.

Like other moms, Madison struggles with time management.

"Babies and toddlers simply demand all of your time. If I am alone with my daughter, I just have to accept that I am not going to get anything accomplished besides being a mom," the actor told the digital magazine.

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At the same time, Madison, 34, said motherhood has "made me seek balance."

"I have to be very diligent about getting everything done during hours where I have some help with Rainbow," she said, adding, "I've been perusing more behind-the-scenes things too, things that will have a longer shelf life for me."

That includes writing a book.

"Right now, I'm working on a book and I love it," she told Mini. "I feel so productive without ever having to get out of my pajamas."