A President has a tough job, but Trump's is tougher than most. There's no loyal opposition, the Dems want him as good as dead. And the promise of a GOP Congress passing bills that the President can sign turned out to be a cruel joke.
He is opposed by democrats, and by his own party.
But he effectively used the GOP as a vessel, for his otherwise 3rd party/outsider run.
He is MORE in line with what GOP voters have wanted and have been promised for years; namely immigration reform, healthcare reform, tax reform, stronger national security, budget reform.
The elected GOP reps promised all of that. Now they refuse to deliver it. Congress is held in deeper and deeper disdain. Yet the get reelected because of protected districts, money from lobbyists, etc.