The Marriage Minute from the Gottman Institute is a free resource that is emailed to you twice each week. Based on years of research and the principle that small things can make a difference in our marriage,  each Marriage Minute is a small teaching tool to help deepen the marriage relationship.  In the words of the developers, “our goal is to teach you one thing each day that will deepen your friendship, allow you to use conflict as a catalyst for closeness, and enhance the romance in your marriage.”
Qualifier:  This is not an Orthodox resource.  However, most of the teachings presented are compatible with Orthodox Christianity and provide tools for the overarching theme of growing in oneness.  The resource can be used in our personal lives and in ministry.  Many faithful Orthodox Christian therapists are trained in Gottman methods of relationship growth and find his perspective to be, for the most part, compatible with Orthodoxy.
To register for the Marriage Minute, go to:  https://www.gottman.com/marriage-minute/