It is a common experience that we trust our parents and close friends much easily than strangers. However, sometimes it may happen that a stranger is telling you truth and your parents are lying with you. Mare thought of such situation make us rebel. Even if that stranger is right, we will not believe him until and unless he come up with some undeniable evidence. In that condition too, we find some excuses to cover up our parents.
To understand how we believe over one thing and disbelieve other, we need to understand our mind. There are two important theories that can make us understand why we believe what we believe.
Both theories deals with our behaviour based on our indoctrination and upbringing. We are bias and deluded without knowing about it. We live in a delusion that what we follow is the right path and what we believe is correct by default. Similarly, we are bias towards our family and society. We think that we are right and everyone is wrong without any evidence and proof. We need a paradigm shift. We need to see world as it exist, not as we perceive due to indoctrination and unconscious biases.
How to come out of delusion?
After recognising that you are living in delusion, it is time to come out of it and see the real world as it exist. Learn about different philosophies and interact with people of different faith, culture and ethnicity and countries. Stop judging people by their name, caste, color and religion. Read books of different authors. Let your mind to absorb different views of different great personalities across the globe. By doing so, you might come out of delusion and will be able to see the world differently and correctly.