Yes, feeling invisible is a good description of how I feel too. It is very lonely to be depressed and not have anyone that I interact with on a daily basis have any real concept of how I feel. It feels as though I've disappeared and no one noticed. I'm driving through the fog on my own, no one with me to help navigate or cheer me on. How could anyone who is clinically depressed ever describe to someone who's never experienced it what it feels like? Not much point in trying. I hope you feel that you can share your feelings on here and know that a whole lot of us see you and want to help guide you through the fog.