This is a hard one. How to address issues without arguing?

 
It’s very easy to argue. It’s very easy to get caught up in the way that someone said something.
Because of that, it’s very important to think about the quality of the interactions that you want to have, and to set this intention, either with your partner or yourself: “I would rather have a peaceful, loving interaction than argue, and that’s more important to me than being right.”
So if you have a topic that you would like to discuss with your significant other, and you don’t want to argue about it, get clear, set that intention beforehand, and tell them before the conversation: “I don’t want to argue, I want to share with you, I want to feel heard, and I want to understand you too.”