No relationship, even the strongest ones, exists without at least an occasional argument. What separates resilient couples from others is the way they're able to handle conflict. The way partners communicate is the most important, especially when feelings run high and tempers are heated. "Before you speak, take a beat to consider the impact of what you want to say," says Shari Foos, M.A., M.F.T., M.S., founder nonprofit group program The Narrative Method. "Try to anticipate how the information might make your partner feel, so you can show empathy to them while expressing what you want to say. Try writing...