Being surrounded by yes men, supressing dissent and limiting access to objective feedback and diverse perspectives will lead to inflated sense of self and distorted view of reality. His cult personality will wear him down as he see himself as infallible and above criticism. He is always in a state of paranoia and craving for love from his supporters and always on the edge fearful of conspiracies and threats to his perceived power. He is already showing signs of burnout and stress with constant pressure to maintain power and supressing oppositions. It is only 6 months. At this rate, Trump is falling apart congnitively and physically fast. Would not be surprise that we will see the 25th amendment in his term and that will be for the good of America and the world.