I think he ingrains his lies and just keeps telling himself they are true. You do that enough and only the most traumatic to your psyche are still indistinguishable from lies. So I do believe he thinks he is smart, the most popular person ever, the best deal maker, etc. But you can tell what lies he hasn’t fully been ingrained and ause they still bother him, like the 2020 election.
I think he ingrains his lies and just keeps telling himself they are true. You do that enough and only the most traumatic to your psyche are still indistinguishable from lies. So I do believe he thinks he is smart, the most popular person ever, the best deal maker, etc. But you can tell what lies he hasn’t fully been ingrained and ause they still bother him, like the 2020 election.