Certain lines should not be crossed, and it’s important to repair them.
For that, keep in mind you have to validate the other person’s feelings and acknowledge the fact they experience things differently than you do.
When you’re in an argument, before you disagree, try telling the person you’re speaking with what you heard them say.
When you’re in a disagreement, you are able to repeat what the other person said for only 10 seconds. After that, you go on with your answer or tune out. But it’s important to repeat what was said so they feel acknowledged.
We get into arguments because we want to feel that the other person respects what we’re experiencing. Saying "I can see where you’re coming from" is a great form of validation.
When your experience is acknowledged, you feel sane. So even if you don't agree with the other point of view, it helps to acknowledge that there’s another person who experiences the same event very differently from you.