He needs to focus on this like a laser. Deliver what you said you would do. If he does that, and the economy improves, he wins in 2020.
Exactyl Pax. Nothing else matters. They (Leftists) can say or think whatever they want of him, and predict the end of the World as far as he's concerned. If he delivers on the reasons he was elected, he will send his detractors away babbling to themselves.
I've boiled it down to two simple "yes" answers he needs a majority of Americans to answer in 2020:
1) Do you think the Country is safe and secure and that our very strong & very capable Military can keep us this way?
Y/N
2) Do you have, or can you get the type of job that is paying you the amount of money you either need or want?
Y/N
I think Trump already knows this, that's why he's not paying any attention to all of the haranguing going on by the Left.