I understand your frustration, the monotony of raising small kids. My wife did that too, plus watch a few others as a home daycare business to earn a little money. I don’t know how she did it. I could not.
She stayed very active though. She was always going somewhere with the kids, doing something, like to the park, the zoo, doing arts & crafts. All of this seemed to help break up the monotony and give a feeling of purpose. And she used to live on the phone (and still does), finding that emotional connection with other women.
This went too far to the extreme though, and caused us to drift apart, contributing to many of our problems. Now she and I are trying to connect again, understanding each other’s different needs and trying to focus on meeting those needs.