Repetitive thoughts which are unwanted and distressing may be a symptom of Obsessive Compulsive Disorder. From your description I can see that your 'automatic' thoughts may be a part of OCD. However, if you are thinking about the same issues again and again and you leave activities to think over same things, such that lot of your time goes wasted, then it may be the symptom of depression too. In both cases, you need to first meet a psychiatrist or a clinical psychologist for proper diagnosis and assessment.

I believe you are getting repeated thoughts causing worry for you, which you are trying to avoid. This can happen when somebody is facing problems in life, but if it is causing problem with work and these thoughts itself became problem consult a psychiatrist near by he will asses help with either counselling or medication