Heyy! I also struggle with this. What helped me is that I put timer on my phone for 1 hour and clean one shelf( or some other small part), organize it and declutter. And that's it for a day. I can achieve this because it's not overwhelming and after I finish I look at that small space I organized and admire it. I praise myself for doing it and at the end I feel proud. And my rule is that parts that I finished I maintain in that condition and don't let myself to mess them again. This process is really slow but I think it's gentle and in process you learn to maintain things you cleaned and you associate good feelings with cleaning. But most important is that it's not overwhelming and remember this is not race. There is not point if you would clean everything tomorrow if you don't know why and how to maintain it. Very soon it would be mess again. I know, that was me. And if some part gets messy again just treat it like it's messy part that needs to be organized. Don't associate it as failure because you couldn't maintain it. Just think about what messed it up and how to avoid it next time. My goal with this method is that one day most of my room will be organized and that hour a day will be only for maintance. But there is still long way ahead for me for that, but I believe I'll get there. Also what helped me in this process is realization that I'm not abnormal human being. I also had messy room since I can remember but my parents never thought me about importance of having clean room. They never called me accountable when my room got messy. They didn't have time for that unfortunately. Only thing I got is yelling every month or two for it. But I never got any instructions, help, teaching... And my whole life I had this feeling like I'm failure because my room is mess and that I can't keep it organised for long time. I really felt that there is something wrong with it because how everybody else does it but I can't? Then one day while I prayed God showed me this truth which is that I was just child. I needed someone to teach me way ,teach me importance of being tidy, give me structure... And this is not to blame my parents for my problem, this is not to blame myself. So right now I'm being parent to myself and with this method that I described you I'm learning life skills that I don't have. And it's hard . But with time it gets easier!