Please watch the movie fireproof and read the love dare.
Also the vows you took should mean something to you, you entered into a covenant with not just your wife but you entered in with God as well.
God hates divorce, divorce is only warranted because of the hardness of mans heart because men don't forgive quite like God.
Has she committed abuse? Has she committed adultery? Has she abandoned you? If so then well of course you can go ahead and divorce her, but instead why don't you forgive her? The bible says the husband is supposed to love the wife like Jesus loves the Church.
I know you are your own boss, and I know the world will say let her go, but God says forgive.
I've been where you are to an extent, I've been unhappy in my marriage as well... We argue almost daily, there's things I wish he'd do different or things I wish he'd say but I've begun to realize a thing or two... I've realized that love covers a multitude of sins, love conquers all, and I took the vow for better or for worse, in sickness and in health, until death do us part. Of course I can't see a future without him, sure sometimes I want to strangle him (just kidding), but I love him so much that I can't imagine ever being with anyone else but him.
I can't say I know what's going on in your case but I can say it does get better, pray, trust in God, and again consider reading the love dare and when you're finished read it again that's what I plan to do. Love is not something you sling around, it's not just a word, it's a verb it's what you do. Many enter into marriage for selfish reasons; sex, money, loneliness, Yada Yada but they go in not realizing that it's a long road that can be grueling, it's a true commitment not to be taken lightly.
Deep down you love your wife, just like I love my husband. Again my husband has made me mad, he's broken things that mattered to me, and he's said and done really hurtful things... There was times I felt that I was falling out of love with him and I even consider divorce, but again I've done bad things too. If God can forgive me for the times I've thrown things or done terrible things then why can't I forgive? I'm not excusing the bad my husband has done, but I'm saying that no matter what he's done I still love him and our marriage is worth fighting for.
So forgive your wife, stop and think before you do anything rash in anger. Speak kind words over her, take time to pray for her, fall in love with her over again. Do something fun. Maybe you've let life turn you hard, it's time to love again. Consider taking her out to dinner at a fancy place, or take her on a stroll and have a picnic. Take time to read her scripture. All those things may seem little but when you take the time out of your day to do these things it will make a difference.
Loving kindness leads us to repentance, she will see that no matter what you still love her and eventually things will change. Usually the first 5-10 years are the hardest in any marriage, but if you're both seated in Christ it will work out.
Everyone argues, no marriage is perfect, if someone says they don't argue they are fibbing. Should we argue? Probably not but we will that's life , but the goal is to try not to remain angry, and if we do try not to sin against our spouses. Even if we do get angry and sin thank God for His mercy.
I would suggest reading the love dare, watching fireproof, spend alone time together, confess your faults one to another, pray for each other, consider renewing your vows, and make sure to extend grace daily.