impossible wife?

[Dom R]

She probably does know she is wrong at times and that you are right but do not expect her to concede that point. You know what they say, Do you want to be right or do you want to be happy?

if it was just that she didnt want to say the words, "i am wrong", i could live with that more easily.
The problem i have to try to deal with, is that even if she is wrong on a decision to do something... and I show clear indication that what she is doing/wants to do is wrong... she often chooses to just keep right on doing whatever it is, rather than acknowlege by changing her actions, that her choice was wrong.

This is harmful, to me, to our children, and sometimes even to her.

How can I cope with this???