The possibilities for the next 4 years depend heavily on what happens in the congressional elections. If it stays more or less like it is now, then yeah, nothing will get done for the next (at least) 2 years.
However, if there is a successful large-scale movement to oust incumbents, and some people willing to cooperate get voted in, things might get better.
Point is, he can say what he wants to do all day, but what will actually happen is another story.