Thought patterns are developed overtime whether early in life or later.
Living with or among others, one may observe a particular behaviour over the course of some years. Sometimes the other person may have caused you to lose trust in them and this interferes with the ideals of the person’s character altogether, to you.
I have come to realize that trust, after it is lost, it taints everything the person says or does. No longer are their words a safe haven to your thoughts. No longer do you wish to understand their philosophies of life or how they critique you about yourself. They have become a voice in the wilderness to you.
Much time would certainly be needed to recover or reestablish the trust element in a person after it has been lost.