I know exactly what I need to do, but doing it is hard. A lttle support please.

My son and his father are estranged. (Dad and I are divorced.) Both of them have made some really bad choices with respect to one another. I keep finding myself in the middle. Father and son both invite, even expect me to jump into the middle, but only because that is an expectation I have created through my own patterns of behavior.    I very much need to stop running interference between them but it is like a compulsion. I ain't the only Mom or Dad who has sailed these rough waters, and am looking for some backbone.