Poor communication is a major cause of marital issues, its origin being traceable to childhood when personality weaknesses develop. For effective communication a person must have an accurate sense of who they are. This "sense of self" is gained through the continuing interaction between a child and their mother who is the most important figure in a toddler's life. Through this emotional interchange the child eventually gains a firm adult personality which governs his thinking and behavior throughout life. But problems can develop.
If a mother is narcissistic, she places her interests above those of her child, using them to reflect her idealized image of herself rather than what should be primary: encouraging their child's independent accurate identity which is needed to communicate well with others. And from this deficiency many years later, marital problems may arise.