The stories we tell ourselves can be stubbornly resistant to change. Case in point: a recent story by Michael Lewis for This American Life.
"These stories we tell about ourselves-- they're almost like our infrastructure, like railroads or highways. We can build them almost any way we want to. But once they're in place, this whole inner landscape grows up around them. So maybe the point here is that you should be careful about how you tell your story, or at least conscious of it. Because once you've told it, once you've built the highway, it's just very hard to move it. Even if your story is about an angel who came out of nowhere and saved your life, even then, not even the angel herself can change it." ~Michael Lewis