Most marriages have been at the C step for a while. Although sometimes we accidentally or purposefully move ourselves to the D step. This is an issue, expecially if we want to continue forward towards our relationship with our Father and our family. We need to reapproach this situation by allowing ourselves to revist steps A and B for as long as necessary to be comfortably in step C again.
As stated in Doctrine and Covenatnts, we must "prepare every needful thing". Marriage is not about independence but instead focued on our interdependence. As we produce our whole selves and hold nothing back, it invites our partner to do the same. For once we allow ourselves to become maluable than we are able to be built up together.
What can be a stumbling point at any phase of a relationship is when something 'has always been done that way'. This can be detrimental due to the sensitive nature of surrendering your own comforts for those that our your family's instead.
Therapy is a great avenue to aid when there is a stopping point in the progression of the relationship. This can be for more serious unseen issues or how to understand how to be in phase with your spouse. Therapy is a great way to use a external refernce to understand how the significant other feels about anything. This is not a substitution for communicating with them, but instead a catalyst to aid in healing invisible wounds.