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No man remains a clean slate in life. Life input in us some information through life occurrences, whether its an occurrence that we influence or the one that came to us without any effort. They all come together to make an impression, and due to the impression made, they shape our believe, fear and pride. The impressions that were made are not permanently written or rigid, they are dynamic as much as possible in every situation. Though, there are three components, they mix and sometimes isolated among factors that helps us in making up our mind to do or not to do a thing. And there is another unique thing about everything, two persons under the same occurrence will have different imprints, because our believes differ, so also our fears and our prides.
To a high degree, I'm yet to identify any other factor(s) that brings about our differences. I try to isolate the three(3) components and could not identify any other one.