For example, if a wife does not take responsibility for how she feels, she blames her partner when she feels unhappy. Her kind of irresponsibility translates like this: “If I feel bad, you are doing something wrong. You should be doing something different.” How many divorces and how much unhappiness occur because one partner depends on the other for happiness and completeness?
That is a possibility, but its framing ignores the fact that we do affect each other in profound ways. We can't be the source of all happiness for each other, but that doesn't mean we are not responsible for any happiness at all.