If we're being honest, I don't think it was my marriage that broke me. It was all the marriages.
I just finished reading this book, Fleishman Is In Trouble. It's about divorce - and specifically about a woman who, one day, simply disappears - abandons her marriage and her job and her children while her husband holds up the fort, so to speak. It involves major twists that I won't spoil for you because you really should read it - but I don't think it's a spoiler to tell you what I took away from it. Which is that this book explained my own story to me in a way I hadn't fully comprehended before.
At the crux of the issue is the plight of the working mother. I shy away from this topic because in our present culture there is such (completely valid) sensitivity to the different ways women approach parenting. There is a danger, when you identify yourself as a "working mother," of creating distance between yourself and the other kind of mother - the one who "doesn't work." But who does! Of course she does! She does the hardest job!