Hello, Welcome to Health Care Magic

I can understand your concern. The symptoms of depression should not be overlooked. You had some personal problem and it caused persistence of the symptoms. If you are having symptoms like hopelessness, helplessness or worthlessness then in my opinion there is need to see a psychiatrist.

As the symptoms are related to some things of past so in my opinion Cognitive Therapy would also help you. The therapy helps to correct abnormal faulty cognitive distortions and help in depression. Visit a psychologist for help.

Thanks, hope this helps you. Take care

Dear
Welcome to HCM
We understand your concerns

I went through your details. I am really feeling sorry for what you are feeling. A thing happened in your past, only lives in your thinking. Otherwise, it has no existence. In this case, you are giving that "thing" existence through your thinking. I remind you, you are doing this, after all this years of experience in living in this world.

I think, as you are unable to get this "thing" out of your mind, and the "thing" depresses you again and again, you should approach a psychologist for therapy.

If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR.
Make sure that you include every minute details possible.

Hope this answers your query. Available for further clarifications.
Good luck.