To be honest, I didn't like the dare when we were supposed to make a list of our husband's negative traits. I think when you put thoughts into words, it gives them power. I even told this to my table group at church. They said, don't worry, you tear it up the next day. Even so, I didn't like this. It caused me to focus on the negative. And the negative was something that can't be changed anyway, so what was the point?
Scripture is clear about thoughts turning to words turning to actions. "Take every thought captive..." because that's where trouble starts. "Out of the abundance of the heart, the mouth speaks." Next, you act on your words. Now think about that sequence in a positive light--you dwell on your husband's good qualities, you tell him how you feel, how proud you are of him, how glad you are that he is the man he is. You praise him for the good things he does. Then you naturally will want to do nice things for him to show your appreciation. This can only make your marriage better.
"Whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable--if anything is excellent or praiseworthy--think about such things." Philippians 4:8.