He lacks the ability to "walk the walk". He always has lacked the ability. It's why he can't take criticism because in his heart of hearts he knows he's in way over the head.
The current chaos in the White House is the proof. Management style comes from the top down, and Trump has the attention span of a gnat, never sweats the details, and give broad orders and expects others to work out the details.
But he has no team to work out the details, because he's too busy attacking the media and holding love-in rallies to bother hiring anyone.
Really, Ryan says taxes and the maobamacare repeal will be done this year. He's already signed two CRA bills doing away with regs and there's a dozen more in the pipeline. To this point only one CRA had been signed by a president in US history. Things are getting done but congress doesn't move at the speed of business.
By this time, Obama had already passed his stimulus bill, and the Lily Leadbetter Act, among other things. But then Obama spent the transition time hiring a team, getting them vetted and ready for confirmation hearings, and getting his legislation ready. Trump spent the transition time on a victory tour and attacking Saturday Night Live and Meryl Streep via Twitter, and declaring the media an enemy of the people.
And republicans didn't use every delaying tactic in the books to keep the dear leaders cabinet from being seated.
That's because Obama nominated people who were qualified for the positions he appointed them to. Obama appointed a nuclear physicist to be Energy Secretary. Trump appointed Rick Perry - a guy who thought that the Energy Secretary was a promo man for the oil business, and who had previously suggested he would abolish the department.
Perry was shocked to learn that the Energy Secretary is responsible for the maintenance of the nuclear arsenal. So Obama appointed a nuclear physicist for the job, and Trump appointed a guy who didn't finish college to take care of the nukes. And you wonder why people are slow to approve his choices.
Also, Obama had 94 of his picks confirmed by his Inauguration. Trumps' people hadn't finished their paperwork with the Ethics Office, or their security clearance before the confirmation hearings started.
Also, Trump's claim that his confirmations are going slower than any other President is patently false. Obama's cabinet wasn't all confirmed until the end of March, even with him having put forward nearly 3 times the number of appointees for approval by Inauguration Day, than Trump.