As I wrote before; the three essential threads of marriage are communication, money, and sex. I will focus on the most important (communication) today.
Communication has been a weak area for me most of my life. I tend to be very liberal and out spoken on certain things. Mandy occasionally calls me an extremist. I have learned over time that I must pause before I speak. At times this makes me look like I have a lack of care or even perhaps foolish, but I have learned that if you let your mind process what is being said you can answer with deep thought. This has worked out a lot better for me over the last few years.
It is so important for you to watch what you say. Words really do matter and so does your delivery of those words. As Jesus says in Matt 15:18, the words you speak come from the heart and that is what defiles you. I believe the less you speak the less likely you will be to sin and hurt people.
Over the years Mandy and I have learned to fight fair. We try to make it a goal to never go the bed angry. Whether right or wrong, we will apologize to one another for losing our cool. We both have very different views on certain things and sometimes we have to agree to disagree. That is what makes our relationship so beautiful. She balances my thoughts and I do the same with hers. God knew exactly what He was doing when He arranged our covenant.
My advice on making your communication better with your spouse is to sit down at least 15 minutes a day with no distractions. This will help you discuss the things on your mind and it will bring you closer. You may never know what each other is going through otherwise unless you make a priority to sit down and talk daily.
By the way, marriage will be the toughest job you ever have! It requires you to work 24 hours a day, 7 days a week. The only break you get is when you sleep and you may occasionally get a kick or a slap in the middle of that. Remember the things that become the greatest in your life will be the things you work on the most.
Matthew 15:18 Holman Christian Standard Bible (HCSB)
But what comes out of the mouth comes from the heart, and this defiles a man.