Never speak about your spouse with contempt.
Squash firmly any thoughts you have that are filled with contempt.
Contempt is the marriage killer.
A marriage may survive sheer hatred but it will never survive contempt.
Oh, and never speak about any problem you are having with your spouse with friends or family. That was one my mom taught me.
As she explained, "more then likely you will work it out but you will have made me hostile toward him forever. Because you are my child. And he hurt you. Even if only a little bit."
A priest said “as soon as you bring your parents into an argument you’re having with your spouse, THEY are now part of the argument. Don’t do it.”
All excellent advice, and very true.