See something, say something. In the moment.

Use teachable moments to educate your partner.  Acknowledge the words or gestures that promote a positive atmosphere in your household, no matter how simple.  This is the best way to let your partner know what he/she can do to promote harmony at home.  Use magic works like “Thank you” and “That was so nice for you do to.”  It’s a whole lot easier, and productive, than lecturing.  When you see something (positive), say something (positive).