Take out paper and pen and, working separately, each of you write down five things which you dislike about your partner. This should be done quickly, only give yourselves a minute or two to complete your lists. Just write down the first thing that comes to mind. Now, each of you make a list of five things which you love about your partner. Again, do this quickly and write down the first thing that comes to mind.
Most people find it is the first list.
This should give you both something to think about. If not, then let those things go and start focusing your attention and energy on those things which are positive and bring love and happiness into your relationship. It's up to each of us to take an active role in our relationships. Do away with those things which are destructive. Remove the elements of competition and focus on those things which promote cooperation.