A couple were celebrating their 50th. Someone asks, "What is your secret?"
The woman says, "Three words I had to learn for happiness: you're probably right."
They look at the man to see what he says about that. He looks at the woman, smiles, and says, "You're probably right."
What's more important to you? Being right or being happy? When you enter an argument with anyone, decide which is more important and act accordingly. Also, with relationships, I might give a humble suggestion. Decide to write a list of 10 offenses for which you'll never complain. Now, never write the list. So when the person irritates you, you can say to yourself, "they better be glad this is on their list of 10 things I won't complain about." It will help you sort out the necessary from the uncecessary. It works for me.
Also, try the "I message." It works like this: "I get really upset when you (accurately describe behavior here) and it causes me to (accurately describe consequences here.)" The key is the word "accurately." It's emotion, action, consequence. It's much better than kvetching.
Finally, never be afraid to dump that pride. Just let it go! Who cares if you prove your point -- what war have you lost in trying to win a battle? Sincerely let them be right sometimes. And if you're honestly wrong, admit it. People love that. And you'll be loved for it. Humble yourselves...
And if you think I'm wrong about all this... you're probably right.