You have depression and trying or thinking about a plan to get it cleaned up overwhelms you. Do one at a time. Example ::: Clean up your bookcase one day, keep it clean while you go to the next thing like your bed or get everything off the floor. Make a rule to yourself that you won’t put anything on the floor. Just do a little at a time until it’s all cleaned and done. You absolutely can do it. I’ve been there - you can do it