I heard this little blurb on the radio a decade or so ago: (paraphrased...no way I remember exact words)
This guy saw Charleton Heston in the bathroom at the airport and commented to him about his long-lasting marriage. During the exchange ole Moses Heston in his deep Moses voice said his 'secret' was three magic words..."I...was...wrong."
As I wrote the above Chrissy was pontificating in the living room the list of 417,312 wrongs I have done to her so I went in and used them and even used my version of Heston's Moses voice and it made a dent. She mentioned the actor Denzel Washington's 'magic advice' was to tell 'her' (wife) that she's always right...kinda the same thing in 'opposite words'.
I'm not giving advice I just got on the subject and was off and running with my unfunny humor and other rambling comments. You must be used to that by now.