If your father has Narcissistic Personality Disorder (NPD) and is constantly trying to know what you're thinking, it could be due to several reasons related to his condition:
Grandiosity and Need for Control: Individuals with NPD often have an inflated sense of self-importance and believe they are special and entitled to special treatment. They may feel that they have the right to know everything about others, including their thoughts, as a way to maintain control and feed their grandiose self-image.
Lack of Empathy: People with NPD often struggle with empathizing with others and may focus solely on their own needs and desires. Their curiosity about your thoughts might not stem from genuine concern for you, but rather from a desire to understand how you perceive them or how your thoughts relate to their image.
Validation and Narcissistic Supply: Individuals with NPD crave admiration and validation from others. They may constantly seek to know your thoughts to gauge if you admire or approve of them, as it provides a source of narcissistic supply that boosts their self-esteem.
Boundary Violations: NPD can lead to a lack of respect for boundaries, and this may extend to invading your privacy or constantly prying into your thoughts, disregarding your need for personal space and autonomy.
Manipulation: A person with NPD may use their knowledge of your thoughts and feelings to manipulate or exploit you emotionally, especially if they perceive any vulnerability that they can take advantage of.
If you find your father's constant need to know your thoughts uncomfortable or intrusive, it's essential to set clear boundaries and communicate your needs assertively. However, dealing with someone with NPD can be challenging, and seeking support from a mental health professional can be beneficial to help navigate the complexities of the relationship and develop coping strategies. Remember that you are not responsible for managing your father's NPD, and taking care of your emotional well-being is crucial.