If you are asking "how do I save my marriage?" you are obviously not alone in this.
Maintaining a marriage is difficult.
When you take two completely different people, with completely different manners, attributes, characters, likes and dislikes and make them live under one roof; it might get a little problematic.
OK, not a little, there can be huge fights and problems, which can lead to a divorce.
But you can save your marriage.
I have been in this situation, and thought everything was hopeless.
When my husband told me that he wanted a divorce, I burst in tears, and begged him not to: "Please, please George!  I love you! I understand all of my mistakes, they will never happen again! Do not do this!" And I continued doing that for quite some time.
But all it did was establish me as a needy, pathetic, dependent spouse.
 And no one wants such a person as a spouse.
So when those didn't work, I realized that I was indeed becoming more needy and pathetic by the day, and thought that I needed some advice from an outer source; not from the "inner" source (my emotions).
I decided to look over the Internet for outside advice on how to save a marriage.
Do I need to tell you how much of a difference it made? It made a WORLD of difference! I was taught the real ways on how to save a marriage, and how to maintain a happy marriage after I saved it.
They were incredible, and there was no possibility that I could have thought of them by myself, not slightly in that desperate situation.
So the first thing you have to do if you are asking yourself "how do I save my marriage" is that you stop asking it to yourself.
Acknowledge that you are going nowhere by yourself, and ask the Internet, or a trusted friend, for outside advice.