Every mother ought to either read this book or have someone explain its principles. This teaches you how to prioritize your life. Once your priorities are in order, things tend to fall into place, and you will have peace.
Why the four stars, then? A lot of the stuff here is hard to apply for the youngest families, those with babies and toddlers. It's hard to put stuff into place when the schedules are constantly changing and things are very chaotic. The principles still are still very helpful as long as you know that how they are applied might look different during those years.
So, all moms, do take a look please, but don't be discouraged if it doesn't *quite* seem to line up with your current position.