Where Do I Begin?

My room has not been fully cleaned more than once in the past few years. I keep telling myself that I'll have a huge cleaning day once I have a full day off. I have never followed through. My depression/ADHD has been pretty bad lately, and I have practically 0 motivation to actually /do/ it. It seems like such a big, arduous task.

So; where do I even begin? About how long would you say this should take? How can I even get myself to start?

I'm hoping posting this will elicit some motivation, even if it's in the form of embarrassment (lol). Also, let me know if I should put this in a different sub!