What is the instant, best & scientifically proved method to calm down turbulent mind ?
There is no instant fix. The best scientifically supported treatment involves first determining why your mind is turbulent (usually anxiety, but many other causes) and then recommending a specific treatment plan. This usually includes a combination of medications and therapy. Some medications temporarily cover up the anxiety and can be some short-term relief, others take longer to start working but can reduce the level of anxiety more consistently. Therapy can teach skills for controlling your thoughts better. It would be best to get evaluated by your family doctor first to rule out medical issues then see a mental health professional.