"Imagine spreading everything you care about on a blanket and then tossing the whole thing up in the air," the Parks and Recreation actress, 43, wrote in an excerpt obtained by Hello! magazine. "The process of divorce is about loading that blanket, throwing it up, watching it all spin, and worrying what stuff will break when it lands."
"When you are a person going through a divorce you feel incredibly alone, yet you are constantly reminded by society of how frequently divorce happens and how common it has become," the Saturday Night Live alum added. "You aren't allowed to feel special, but no one knows the specific ways you are in pain."
Poehler doesn't go into too much detail about their breakup in the book, admitting it's "too sad" and "too personal," but she does say she's proud of how she and Arnett have managed to put their kids first.
"I am proud of how my ex-husband Will and I have been taking care of our children," she wrote of their two sons Archie, 5, and Abel, 4. "I am beyond grateful he is their father, and I don't think a 10-year marriage constitutes failure."
One person who helped the actress through the difficult time was Louis C.K. "Divorce is always good news because no good marriage has ever ended in divorce," Poehler recalls him telling her.
Arnett filed for divorce from Poehler in April 2014, 19 months after the couple announced they were separating.