It is said that we are the sum total of our thoughts. I believe this to be true as it relates to our relationships. If you think good of your partner, good follows, if you think bad of your partner bad follows. Now this isn't magical ... it's a lifestyle.
Think for just a second, what are your dominate thoughts about your partner? Are they good or bad? How you think about your partner often translates into how you feel about them and how you seem them.
My challenge: Think about the good things. The things you like, love about your partner, not just the things you don't like.