During a recent interview on the singer's daytime talk show, Clarkson, 38, spoke with Alicia Keys and author Glennon Doyle about her divorce.
During the chat, the "American Idol" brought up her divorce from Brandon Blackstock, her husband of seven years, calling the process "horrible."
"There are so many hard parts," she explained. "The hardest for me is the kids, that's the hardest for me. I think, as women especially, we're trained ... to take it all on and you can deal with it and you're fine, but it's your babies that you worry about."
Clarkson filed for divorce from Blackstock in June, citing "irreconcilable differences” after roughly seven years of marriage. They share daughter River, 6, and son Remington Alexander, 4.
Clarkson praised Doyle's book, "Untamed" and said it made her take stock of her own marriage.
She recalled feeling that her marriage "isn't happiness for both of us," and that both she and Blackstock "deserve better."
The singer was recently awarded primary physical custody of her children amid the split.
According to People, the singer and talk show host has been given primary custody over the kids in an effort to provide stability in the children’s lives. Blackstock, a talent manager, plans to live in Montana while Clarkson continues to work and live in Los Angeles.
In court documents obtained by the outlet, the court ruled that "the level of conflict between the parents has increased. The parties have a difficult time co-parenting due to issues of trust between them."
As a result, Blackstock will be allowed to visit the children in Los Angeles as well as video chat with them every day at a previously agreed upon time. In addition, the kids will spend their Thanksgiving break with their father and Dec. 19 through Christmas at 2 p.m. as well. Meanwhile, Clarkson get them that afternoon through the end of the New Year’s holiday.
People notes that they will share joint physical and legal custody, but she will remain the primary physical custody holder in Los Angeles.
Fox News' Tyler McCarthy contributed to this report