Browne, I expect, did not start out as a swindler; I suppose she originally believed that she actually had some sort of ability or knowledge, and after convincing herself, she was able to convince others.
But as best I can tell, she really had no special talent. And I strongly suspect that she was aware of her limitations, but could not come clean because the money and celebrity status were just too darn good. It is conceivable that she actually felt she was in the business of helping others, and her heart was in the right place.
But this is not saying much, I feel. She was a pretender, a passer-off of nonsense as truth, a BS artist. Having one's heart in the right place is not much of a redeeming virtue when nearly every word that comes from you is baseless or false.