Ephesians 4:2 says, "Be completely humble and gentle; be patient, bearing with one another in love." Real Love is built on two pillars . . . patience and kindness. Choosing to respond in a positive way to a negative situation will always help your outcome. Responding in a negative way with anger will never help the situation and almost guarantee you additional problems.
Proverbs 14:29 says, "Whoever is patient has great understanding, but one who is quick-tempered displays folly."
So be sure to demonstrate patience to your spouse and refrain from negative comments on daily basis and watch your marriage get stronger each day!