It sounds like you really to need to find a few times in your day where you can disconnect from the stress. Maybe a few times a day you could find a quiet place and listen to a CD, MP3 player, or read a good book for a few minutes. Maybe journal what you are feeling or just draw some nonsensical doodles when you get a little alone time. The important thing is to find some down time, even just a couple minutes every day if you can allow yourself to shut your brain off and just be. I wish it were as easy is it is to recommend but I hope you can find a way to allow yourself to "come down". Good luck and stay safe.