How to get organized, and start cleaning too? fastest way?

Okay, I'll admit it, I'm a sloppy 13 year old girl.:( I try not to, but I just don't have the time, I'm always busy helping others, or improving something for the better. It usually takes 3-4 days to clean my room, not joking. I own lots of clothes that always end up on the floor, I never know what's clean or dirty, it's like I'm too lazy too pick them up and put them in the hamper or something. My closet is crowded with clothes, and I have no idea how to organize/hang them, I can't even fold that well, I know I'm pathetic for that. I'm always getting rid of clothes, knowing they don't fit or I never wear them, I just wear a lot of stuff, ya know? I always throw my trash on the floor, and I forget/don't want to pick it up and throw it away later no matter how much I tell myself I will. I think I might need motivation. I also have lots of books, collectibles, stuffed animal, etc. I can't just throw some of them away, they have values to me, like they are all irreplaceable stuff. "m just trying to ask, how can I get clean, organized, etc, and stay that way? I'm really desperate, and I need my room done at least before christmas so I have a place to put gifts. Thanks in advanced, I appreciate any help!