The excuse “I think I married the wrong person” really doesn’t hold water, in most cases.  There are rare exceptions, but the long term success of a marriage relationship has very little to do with WHO you marry.  It has EVERYTHING to do with how SELFLESS you are willing to become for the sake of your spouse!  If I go to the trouble to find out what he or she needs, and make an intentional effort to provide whatever that is, then my spouse will be fulfilled, and so will I!  The bottom line is this: if I make it all about me, I will never make my spouse happy, and I will never be happy either, but if I make sure he or she is fulfilled then my own marital bliss will result.