Look at the world with fresh eyes, without preconceived notions. Try focusing on a different aspect of the person you are interacting with, try to notice something different in your environment. Changing your perception and your focus will change your world.
I recently ordered a book called "On Looking: A Walker's Guide to the Art of Observation" by Horowitz, Alexandra. She writes about taking a walk through her neighborhood, using the same route each time, but with a different person and seeing things she had never seen before or seeing them in a totally different way, each experience opened up a new world to her.