Afraid to Go to Work

Another job where anxiety and fear have taken over, I came into this with a positive attitude.  Now, I am on the verge of losing it again.  I understand why many people have warned me about working for this national company.  I came back into working into this field, because I was able to finally convince myself that I was good.  I am good, now I am not saying this to toot my own horn, but just to help my confidence and self esteem that has been torn apart over so many years of being pushed down.  I come back and I am pushed down again.  Stupid policies that have nothing to do with patient care.  I end up with reprimands, when others have done worse.  I guess the goal of doing the best to take care of those in need, is not a requirement in this company.  If anyone else has been in the same situation, I would greatly appreciated.