When arguing with your spouse, it is important to be respectful. Just because you are angry, it doesn't make it okay to be disrespectful towards each other. In your anger, don't forget to listen. Assuming things is one of the worst things you can do. Ask them about things instead and trust what they have to say. Try to get to the bottom of the issues without trying to just dodge confrontations. And finally, remember not to keep bringing up the past.