You may have heard of the "seven-year itch" in a marriage, where after seven years together, one or both spouses feel like they need space from their partner or want out of the marriage. Dr. Robin says researchers have confirmed that this relationship phenomenon does exist, but it actually occurs after just five years of marriage.

Instead of ignoring the itch or taking it to heart and ending your marriage, Dr. Robin says it's important to look forward and see the "itch" as an opportunity. "Open your eyes and see that which needs time and needs attention and take the thing that you thought was going to pull you down and actually use it as a stepping stone to create a new life, a new marriage," she says. "Figure out what kind of work you can put into really building a marriage that is worth your time, worth your energy, " she says.