I have a prayer card for wives with a list of things "to do" to have a good marriage.  The last thing on the list states:  "Keep household troubles to yourself."

What do you think this means?  Don't tell husband that the kids were squabbling that day?  Or don't mention that the sink is backed up?  What is this referring to?

I agree with the above answer.  This isn't suggesting that a wife should not speak with her husband about problems; on the contrary, I would say a wife should absolutely do that.  A wife should not, however, discuss problems she may be having with her husband with someone else (except perhaps a priest).

No, I think that there are a thousand little things in a household's daily life that not necessarily need to be discussed, specially after husband comes homes fatigued from work. Women tend to speak too much and they are mostly responsible for the harmony in the home.

In a marriage, the less irritants the better.

Bingo.

And it isn't easy, I don't think, for a woman to learn how to do this.  It requires exceptional judgment of the potential topic for discussion, and also a keen insight and ability to read her husband.  It may take years to develop these skills.

But as a man, when I arrive home, I'm exhausted five days out of five.  Obviously there is an onus on me to take care of things, and if I come home and there's something that requires my attention, oh well.  "Gotta do what you gotta do."

But if it isn't something that needs to be discussed now, or if it's something that can simply be introduced now and discussed in depth at a later time, the wife should either keep it to herself or be prepared to only discuss it very briefly.

I'm blessed in that I think for the most part, my wife handles herself well in this regard.

Offer it to one of the patron saints for men and women . St Joseph for men
works for me. I wear his Purple Scapular and pray a rosary to him daily.

No, I think that there are a thousand little things in a household's daily life that not necessarily need to be discussed, specially after husband comes homes fatigued from work. Women tend to speak too much and they are mostly responsible for the harmony in the home.

In a marriage, the less irritants the better.

Good answer. And yes, the less irritants the better.