Why cant i fall asleep?!

Why cant i fall asleep?

im so tired right now, i could barely sleep the past 5 nights
the first night it was dusty in my room becuase we just put an AC in so i took 2 benedryl to sleep and didnt get to sleep till 11
the second night, same time took benedryl couldnt sleep untill 12
third night didnt take medicen because i felt fine but couldnt sleep untill 2
fourth night couldnt sleep untill 12
last night the last time i checked the clock it was around 3
im so tired becuase i naturally get up early (well like 8:30) and im so tired. what is going on? why cant i sleep and how can i fall asleep quicker? i tried small meditiation but it didnt work???

2 weeks ago
oh and i usually fall asleep at like 9 becuase thats when im tired (im 15)

2 weeks ago
i thought it was the ac too, so i turned it off last night and that didnt help either. ive been slightly anxious about some stuff and i excersize in the morning or around 1 and i dont drink soda

There are many reasons why you may not be able to fall asleep. You may be mildly depressed or anxious about something, or your sleeping conditions may have changed, suchas you stayed up late on a night and altered your schedule. In your case it may either be the noise from the AC or the extra-cool temperatures. Either way, falling asleep is almost purely a mental issue. I know a couple techniques. (1) Relax your entire body and image putting your toes asleep. As soon as you "feel" them asleep, move up to your feet, then your lower legs, upper legs, etc. This is really just a form of meditation, but if it works, you won't even stay awake past your legs. (2) If you are an imaginative person, just make up a story in your head. The more you add to the story or act it out in your head, you'll just fall asleep. Your body needs rest, and it will get it any way. You may begin falling asleep during the day or being especially lethargic, but hopefully this will help.