I almost slipped a couple times yesterday, but caught myself and made a conscious effort to say something positive instead. Usually I just say whatever's on my mind... I guess it's all about being conscious of our actions and making better choices.....
Be kind to one another, tender-hearted, forgiving each other, just as God in Christ also has forgiven you.
In addition to saying nothing negative to your spouse again today, do at least one unexpected gesture as an act of kindness.