That's why I hire a housekeeper from time to time, lol. I do pick stuff up before she comes or she'll put it away where she thinks it should go and I'll never find it. I completely understand your struggle to keep your room clean and total lack of desire to tackle that job.
There are little tricks and games you can play to get the ball rolling. One way is to focus on one small area at a time. Set a time limit like 15 minutes to start to work on that one spot. The idea is to break the job down into smaller components and to focus on the one component and ignore everything else. That can help you feel less overwhelmed. Something I do sometimes is to see how much I can get done in 10 minutes. Then I reward myself with doing something fun for 20 minutes. Then I repeat. Just a little game.
I'm sure others will share their little tricks for tackling the messies.