Anger moves from person to person in a house, and so does steadiness. Working on your own reactions was never a private project.

What the research says

In a laboratory study of 69 couples, aggression was highest when anger rumination was high, the habit of reinterpreting a situation was low and alcohol was present, and those factors combined rather than acting alone. What one person carries in is part of what happens between the two. It was a laboratory task rather than a row at home, and it looked at couples, so extending it to a whole household is an inference.

Strength of evidence: one line of research. A single study, or a theoretical account.