Spend time outdoors ... go camping or sleep outside for a night or two ... just unplug and be alone for a few hours or a few days. It does wonders to your mental health if you just remove yourself from everything and everyone once in a while.
Spend time in water if you can as well. Float a river or go to a beach or lake. I always joked about drying out but its true. Natural bodies of water are special/significant for me/my well being.