Beyond the fact that I haven't found Mr Trump's election to be especially "agonizing," I'd say that this article gets it right.  Truth be told, this is how we should respond to _any_ leader, whether we approve of them or not, whether we get along with them or not.

Don't react in haste, comment and act on the merits of any proposal.

It's a little surprising to me that anyone might need to be told to act this way.