Why Are Some People So Deceptive?

Why are some people so much more deceptive than others? Wayne Dyer wrote a book, for instance, "Pulling Your Own Strings", and discussed deception. Secondly, why do so many of us find it so difficult, in general, to overcome certain "limiting beliefs"? Despite this being the twenty-first century, when we have landed and walked on the moon, and may well be colonizing Mars soon? Perhaps, as Gloria Steinem once said, "The first problem for all of us, men and women, is not to learn but to unlearn.” Then, too, it is said of Georgia O'Keeffe, who some say was the greatest American female artist of the twentieth century: "In nineteen fifteen, Georgia O'Keeffe decided that much of what she had been taught in art school was of little value. She decided to hang recent work she had done on the wall of her home. She examined it and did not find herself in the art. She wrote that she had been taught to work like others. She decided then that she would not spend her life doing what had already been done." https://www.manythings.org/voa/people/Georgia_O-Keefe.html Perhaps it is easier - far easier - to practice deception - and to have what some psychologists have referred to as "personality disorders", which are claimed to be very difficult to change, because, and precisely because, it is the underlying words - or word-sets, moreover, which are so very difficult to change. The very word-sets may be the personality "disorder", although this content creator prefers not to use the term "disorder", in general. For once we start calling this and that a "disorder", we might as well say we have a "disorder" because we cannot be immortal or walk on the moon without a spacesuit.