I am generally a positive person, believing that we will solve big problems in the future, etc. Thus it was really strange to feel how rattled (scared?) I felt by Trump winning. I'm not at all American, so this may not make sense to you, but I am from Norway - a small country in Europe with a sliver of border against Russia - and the US has through NATO been a sort of guarantee against agressions. Trump has made that commitment less clear, and with Putin in Russia, I'm not convinced that this is a good combination for us. (If you have Netflix, you could look up the series "Okkupert" (Occupied), which is about Russia occupying Norway - I've heard that it is interesting, even if the pretext for the occupation is weak).
Looking at the nominations for the transition team, I'm also seriously worried for the climate as the US could be a real leader in that regard, if politically willing. A friend of mine living in Atlanta, knowing more about this Ebell person than me, posted on Facebook about him and the EPA with this comment: "And thus the world burns."
And looking at non-climate science, it seems like the US may be in for a rough patch. Seriously - creationism?
With all the progress you've had in the US lately over abortion, gays and healthcare, it seems obvious that a lot of people will get a real, negative effect on their lives (through policies and supreme court), but sad as I find this, this you have chosen for yourselves.
Economically, it seems highly unlikely that Trump will be able to do much good, but then, politicians rarely do unless through blind luck. Free trade do work though. Less trade with the US, will have a noticable negative effect on the Norwegian economy.
There is also the question of personal privacy, free speech etc - it doesn't appear Trump care about either of those, and with a republican senate and house, he just may have too many tools at hand.
Back when the Snowden stuff hit, I started following Gleen Greenwald on Twitter. Lately I noticed that he was very negative towards Clinton, and I know that he gets blame for the election results, but reading some of the pieces on The Intercept (theintercept.com), I think he has a lot of good points (and they're certainly not pro-Trump).
When all that is said, my psyche is mostly back to normal, I find it hard to be down/negative over longer periods of time.