From Ted McLaughlin at jobsanger:
If there is anything that is clear about Donald Trump, it’s that he is a complete narcissist. He believes that he is the best at everything, and that obsessive belief colors everything he does and says.
It is also the reason that he can’t move past his rather odd electoral victory last November. Trump wants us to believe (as he does) that his electoral college victory was the largest in history, that he would have won the popular vote if not for Millions of illegal votes, and he won because most Americans wanted him to be president.
Of course, none of those things are true. Trump lost the popular vote by over 3 million votes (all legally cast), and he is president only because of the quirks of our electoral college system. And that tears him up. His personality demands that this not be true — and that is affecting his job performance.