Attention deficit and autism affect many people and households. If you are one of these families things may not always go as smoothly as you would like. I know they don't at our house. We have four strong personalities in this family with four ways of thinking. My husband, son #2, and I tend to think things should be done in a similar way. Most of the time. Son #1 marches to his own drum. Or sings to his own tune at the top of his lungs while clapping his hands as loud as he can.
Sometimes my home is not a very peaceful setting. My 12 year old son's bedroom floor is littered with shoes, clothes, and hunting or fishing magazines. For years I have insisted that the shoes go in the closet. They never make it to the closet. Then, I get mad and explode and he gets mad that his room has to be my version of clean.
Reading has always been my escape. I read for diversion and I read for information. Not long ago I read an article about how ADD brains are wired differently. They don't think just like you or me. (Ok, maybe more like me than I want to admit.) Regardless, I want the shoes out of sight. However, my son may need to see most of his possessions to know where they are. He is very visual and this makes sense to me because I have the same tendency. Out of sight, out of mind.
To resolve the shoe problem put a milk crate it by son #1's door, and asked him to please put his shoes there. Guess what? Sometimes the shoes make it to the crate. It is not pretty but it is functional. And simple. Now we are both happer because I am not loosing my cool when I trip over his shoes. The shoe battle that occurs with less frequency. Now, why don't the clothes always make it to the hamper?! Alas, these things just don't matter to a 12 year old boy.
Git 'er done. Find a solution and move on. I am learning to accept that my way may not be the only way to do things. Most of the time just getting things done is good enough. Perhaps I can learn something from son #1 about what is really important. However, I will still have the compulsion to organize and clean his room!
I will be happy help you gain some peace and solve clutter issues with your tween or anyone else.