Like all successful narcissists, on his surface Trump appears confident, self-assured. See how he boasts! However, deep inside lurk fears of unworthiness. Better, see the type of boasts, such as “Look, I’m President now!” The content of the boast is his outer cocky-self attempting to convince his inner flawed-self of the truth of such bluster.
No one else is convinced by such hyperboles and over-blown statements.
Each early morning’s bragging tweet is nothing more than Trump’s lying attempt to convince Trump, himself, he’s solidly right. Nothing in that tweet is going to convince others that he’s right.