feeling anger

I have been a nurse for over ten years. I always had good manners in my work, although I didn't like it. I experienced the unhappiest moment in my nursing life today. I don't want to explain what have happened exactly. I just want it gone away, never affect my mood again. It gave me a lesson and I never have such a strong feeling before to find a better place. I can't accept spend my rest of my life in here.