There was a recent article in the New York times about studies done with rats under stress, you can read the article here.
Here is a quote from the article:
Robert Sapolsky, a neurobiologist who studies stress at Stanford University School of Medicine, said, “This is a great model for understanding why we end up in a rut, and then dig ourselves deeper and deeper into that rut.”
The truth is, Dr. Sapolsky said, “we’re lousy at recognizing when our normal coping mechanisms aren’t working. Our response is usually to do it five times more, instead of thinking, maybe it’s time to try something new.”
The good thing is that this can be reversed and that is where an outsider like myself can help, they can see what you can't and guide you back into alignment.