If watching a TV commercial that shouts, "Just do it!" hasn't encouraged you to exercise, you may find this a source of motivation.
Sample thought modification messages in this product:
I like exercise. Exercise is fun. Exercise is healthy. I am healthy. I choose health. I breathe deeply. I breathe. My cardiovascular system is strong. I am strong. I am good. I like myself. I love my body. I am youthful. I exercise regularly. I walk. I enjoy walking. I rest after exercise. I exercise daily. I love living.