Ideally you should initially attempt to sort it through shape-shifting of your belief system. If you are over-thinking, that means you are anxious or afraid of something to an unhealthy degree. Installing some sense of security within can go a long way to reduce the anxiety and hence remove the need for overthinking. After you try these things, if you are still unable to get your head around it, then you should consult a Psychiatrist or a Psychologist.

Hi... The severity of your symptoms will help decide the management. whether it can be treated with counselling or medicine or will require both. Homoeopathic medicines can help you to achieve long term benefits without any side effects.

First of all go for psychological assessment then decide .