A better suggestion: Pick up a volume of Epictetus: "Events themselves do not hurt or hinder us. It is how we respond to them that matters. We make ourselves miserable by fretting about things over which we have no control, while neglecting those things that we can control, like our reactions. Learn to distinguish between the two." That may be a loose translation, but you get the gist.
Another always relevant piece of counsel, author unknown: Win as though you were used to it and lose as if you liked it.
In short, let nothing you dismay.
And, no, I wouldn't turn to the Psalms just yet, not for any sorrow as ephemeral as the outcome of an election. Except to marvel at their literary quality, and their universal applicability when one needs a very present help in trouble. But be sure to use only the KJV brand. Accept no substitutes like the Revised Standard or some other generic version.
Save the Psalms for when you really need 'em -- for some serious crisis. Believe me, one will come. It's the human condition.