In this video little Jessica has the idea of positive affirmations down to a science! Positive affirmations can be an effective tool to not only keep a more positive frame of reference but also to keep focused on what you want and what is already good and working in your life. This is just cute. Give it a view. As of this posting a few million people already have.
http://www.youtube.com/watch?v=qR3rK0kZFkg&fs=1&hl=en_US