Had an office like this before. 1) plants help. Even a potted Ivy on you desk. 2) if you are in a room on your own,think about getting a floor lamp and turn ove

Had an office like this before. 1) plants help. Even a potted Ivy on you desk. 2) if you are in a room on your own,think about getting a floor lamp and turn overhead light off. It can make a huge difference. 3) consider putting a good sized monitor on the the wall and show the feed of a webcam somewhere in the world , it can by like having a window.