The president no doubt consulted Dale Carnegie.
“Throw down a challenge.”
“Create the eager want.”
“Don’t criticize, condemn or complain.”
“Appeal to the nobler motives.”
“Praise the slightest improvement.”
All the above from “How to Win Friends and Infleuce People.”
Funny you should mention it. As a youth Trump went to Norman Vincent Peale’s church and Trump considers him a huge influence.
https://www.politico.com/magazine/story/2015/10/donald-trump-2016-norman-vincent-peale-213220