Am I stuck with being disorganized and messy forever?

of course you can change! i get what you mean though, it's like the same with me. i am actually quite messy and everytime i tell myself that i am going to be organised and plan out what my homework schedule is, i always fail to do so in the end. it's really frustrating and i also wonder how we can change our ways. but honestly i think that you should just try to focus and set your mind straight. you could start off by just getting some diaries to organize your daily routines. then you should definitely buy some folders. they just make everything so much easier to find. don't forget to label the folders and maybe even in alphabetical order. i also think that you should stop trying to argue with your mum and just ask her for help. do something nice for her and maybe she can help you sort out your things. good luck! :)