Difficult and easy complete one another.
When they married thirty years ago, he usually worked hard to convince her of the correctness in his point of view. Sometimes this led to long-running battles that lasted not days but weeks.
Now, he simply made his point and left it at that. Usually, she would disregard his remarks and forge ahead anyway. Most times this worked out fine. In the rare cases where her choices led to a mess, he never threw it back at her. Instead, he just kissed her on the forehead and said he loved her; which was true.