Another piece of advice is to stay away from crowds like you pointed out. There is a seemingly infinite amount of destinations that could satisfy this requirement too.
Best of luck! I hope you find something suited to you and feel refreshed after getting back.
You might be interested in the concept of masculine / feminine societies (checkout geert-hofstede.com), because as a texan, you are probably in one of the most masculine places in the world, which is probably rather stressful. I would suggest, if you decide to travel abroad, to go to a country that is considered to be a feminine society, like Sweden or Thailand (avoid the south though, and the party islands). I was astounded that a huge city like Bangkok could feel so relaxed, it is a different life.
Though I have to say, traveling is often not advisable when you are depressed. You have higher expectations of happiness that are impossible to fulfill, plus often higher stress levels, which will likely make matters worse.
Perhaps best of all, you'll be outside of cell coverage.