Working out differences with others helps to mature us in our faith. Arguments give us the chance to learn. Even disagreements can be an occasion to celebrate diversity. Some difficult stuff can be a chance to take a humble step back and 'turn the other cheek'. Yes, we certainly wouldn't advise you to go looking for ways to fall out or get stabbed in the back, but when we bring these things before God in prayer, He can really use them for our good.
Years ago, people would huddle together round a television or a record player. But technology now is geared to our own personal, even private, entertainment experience. Life can become like that too - so walled-off and private that we no longer feel we need others so much. Community, though, breaks down our walls. We come face to face with what we dislike in others and in ourselves. Working through disagreements can show us how to respect other peoples' personalities - yes, don't seek out arguments, but don't necessarily run from 'healthy debates' when they flare up. God lives in community (Father, Son, Spirit) and, made in His image, we were made for community too.
So what now? Make sure you aren't going it alone and meet regularly with other Christians. And if you're stuck in an argument you can't get out of, give it a rest for a bit. Stop thinking about what the other person has said, and think about where you could sensibly and generously give ground.