Hmmmm....
If you're looking into changing self image as a means to change your feelings, you might want to look at Transforming Your Self by Steve Andreas as an adjunct to your work with paraliminals.
You might want to try the Belief paraliminal. If you interpret events in ways that cause you to feel bad about yourself and your life, then probably generalizations at work. That is, you're taking specific events in your life and generalizing them to mean things about your entire existence ... your self, you life.
So, Belief may assist you in creating new habits of perceiving things and interpreting events in ways that help you. Also, there is New History Generator.
Another book that might interest you is Learned Optimism, which is precisely about the kind of generalizations you want to stop making and the kind you want to start.