And I have never known a very great psychic, as, for example, Edgar Casey was reputed to have been. Then, I had a series of psychic dreams. And finally, I learned something about the Tarot and began using it in my readings for myself and others. Both, I think. I have since abandoned this notion in the face of unassailable evidence to the contrary.
Some people are more difficult than others.
People who are very withdrawn and severely depressed or deceptive in their dealings with others tend to be difficult. Also, some very angry people put out a very confused signal that is difficult to read. They are about the only ones. Well, actually, when people want to play a guessing game. What they don't realize is that the more information they provide, the more accurate their reading and the longer the reading they get.