Hi there, I have read about ur problem and I agree to the fact that there is an underlying problem of not being able to control thoughts which in turn is quite likely due to Anxiety related disorders. Difficulty in concentration, constant worries over trivial issues, etc all point in the same direction. in order to pin point the exact illness amongst several ( including OCD, GAD ) you will need to get evaluated in detail by a psychiatrist. Treatment options for this kind of problem involves medications, psychotherapy or even both depending on the illness, and other variables related to you. I hope this helps in answering ur concern. feel free consult in detail.