Regarding narcissism, it is a well-researched topic in psychology, and there is a substantial body of literature on the subject. Psychologists and researchers have studied narcissistic personality traits and narcissistic personality disorder extensively to better understand their characteristics, causes, and impacts on individuals and society.
If you have experienced or are dealing with difficult interpersonal relationships involving manipulative or narcissistic behaviors, it is essential to seek support and advice from mental health professionals or support groups. They can provide guidance on coping strategies and help you navigate challenging situations more effectively. Remember that seeking professional help is an important step towards healing and personal growth.