His success will largely depend on whether he has backing from other Republicans in Congress. Cooperation from Democrats would be amazing, but I wouldn't hold my breath on that. In his last term, his own political party severely hampered him. Too many Republicans would stand alongside him when the sun was shining but then join in on the attack whenever a Democrat called for an attack.
I can only hope that the election results will convince Republicans that he is the face of the new Republican party.
The American people, Trump supporters, will need to reject turncoat Republicans loudly. To be sure, there's room for diverse opinions, but don't get in the way of what we voted for.