Admit it, we all have these problems. There are some days, when even though your friend did nothing wrong, you're annoyed. Not be him or her but by everything, and well, truth to tell, them pestering you to know what's wrong doesn't help. Every friendship goes through struggles but learning how to deal with them is how you build the friendship.
Listening- I know it can be hard when your having a bad day but listen. If you're friend and you are in an argument, meet up and talk. I don't recommend talking over the phone, although you can because an argument and problems between you two should be discussed face to face. It means more then a cell phone call.
Talk- This goes along with listening. Talk. Whenever I find myself in an argument, I always end up giving the person the silent treatment but doing so is so childish and pointless. You never know how the other person feels so talking it out can actually make you feel loads better.
Space- While you might want to start the friendship up five seconds after it faltered, don't. It seems odd but if you both are fuming, give one another space. If somebody is angry, annoyingly pestering them isn't going to make the situation any better. I know it's hard to wait but it'll help heal the bond quicker.
Find an agreement- What made the argument start in the first place? Was it her/his attitude? Was it your's? If it has to do with being moody and having an attitude, meet in the middle. Agree not to give each other random moodiness for no good reason. If you are moody that day, make sure your friend knows so they won't be offended when you might come off as rude. Just agree on a safe middle ground for whatever caused the split.
Take initiative- Be open about wanting to fix the friendship. It's not fair to either one of you if you're both playing mind games with each other. There's no way to know what the other is thinking so stand up and take lead on wanting to create peace.
Learn to say sorry- The word. Five letters and the one word that can break down a persons ego almost immediately. Nobody really understand how powerful a sorry can really be. You may not think but it can seal a lot more then people credit it for. I know you can feel like the weak one but at least your showing both you and them that you want to fix this. Chances are they want to apologize too. It doesn't defeat you, it gives you character.
I hope you guys enjoyed and keep in mind, some fights aren't meant to be fixed.
It all depends on how God wants your life to go.
Not all friendships can be fixed but if you guys were meant to be friends, things will work their way out.