If you'd like a little freebie to bring some visual comfort, here is a desktop watercolor image called, Faith > Fear. You can click on the file on the left to download it.
First download the file and note where you are saving it. Then to set it as your desktop, just click on the image. You can then right click and choose "set as desktop background" if you are on a Mac. If on a PC, Right click the image and click "Save as". Save it to your desktop. Go to your desktop and right click the newly saved file, then select "Set as desktop background"