Trump did not win by a landslide last time and (as he is constantly at pains to protest) did not win the popular vote. No, he managed to get lucky. Indeed, there is a picture of Trump and his team looking at the results in stunned silence. 

Sure, maybe things will start breaking his way. 

His son-in-law with no diplomatic experience will solve the Arab-Israeli problem. 

He will out-bluster North Korea and get them to back down on nuclear arms. 

Republicans in congress will pass a health care bill that will satisfy everyone and pass some other legislation too. 

Or just maybe the chaos will continue with the Republican majorities in both houses unable to pass anything except the most basic and essential legislation. 

My money is on the Republican Party being taken out to the woodshed in 2018 as it sinks in that Trump is incapable of acting like a President and becomes mired in fighting with his own party. 

In 2019, Trump will face Democratic majorities in both houses.