There’s a very, very subtle production of the thinking process. It has such a low frequency that we can’t actually see we’re continually reaffirming a self, the narcissistic mind. The difficulty is when we grasp onto what arises in that domain and think it is substantial, that it is real. These hidden thoughts get hold of you and take your very buddha nature, your incredibly, enlightened, radiant, receptive, fundamental nature and twist it up into knots.

https://www.youtube.com/watch?v=RwnKiVD2mhY