3. Figure out your family rules
Couples spend the first 5 to 10 years of their marriage butting heads over how their family should work, says Dr. Robbins. "People often don't realize that they come into a marriage with an idea of how a family works based on their own family—whether they liked them or not," he adds. You can end up fighting over something as trivial as how you should hang your toilet paper, but those little issues can add up to big problems, particularly if children enter the picture. A 2004 study found that how a couple manages parenting responsibilities when the child is an infant is associated with the quality of their marriage two-and-a-half years later.
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