Just a note on the thread's title...

..."How to keep myself in my marriage"...

...it does not sound hope inspiring, just going purely by the intentional usage of words...

...we use words for a reason, and not randomly...

...I am thinking of how it could have been worded differently...

..."how do I fix my marriage?"

..."how do I improve my marriage?"

..."how do I get back to having a good relationship with my wife?"

...you can think of many other ways of wording it more positively and with less of that very weird connotation of "forcing" yourself into the marriage that the thread's title you chose reveals...

Since I believe that your choice of words is informative rather than random (as is anybody else's) even if you rushed when posting, I think you might be headed for a divorce. There really is no point in having a marriage in which you have to "keep yourself"... almost as if against your free will...

If that is the case, it is better to separate amicably before whatever it is that has made it so difficult for you guys gets a chance to assume enormous proportions, leading to animosity, contention, and, ultimately, high cost adversarial divorce proceedings.

If you want to try working things out, deadlines and clear, measurable goals that Rose recommended earlier on the thread would be crucial. There should be some plan of action with milestones, and if they are not reached by the deadline you set together (or, with a neutral third party in the form of a couples therapist), then it is better to separate than to waste each other's lives.