My room is a disaster....hlp?!?

Ok, so I'm 13, almost 14 and I used to love cleaning my room but now that I'm a teen...well, I tend to care less about my room and I leave my clothes around and trash and books and blankets, and all that, and oh yeah in my windoowsill, there are tiny tiny bugs that crawl around, how do I get rid of them? But anyways my roommmom is messy and I try to clean but I just CANT, I feel tired and start reading or something and I've tried blasting music but I still just can't, and yeah so how can I motivate myself? Nothing seems to work?