Not Able to Sleep Now/couldn't Get Rested Before

Hey;

i'm having sleep problems, and I don't know what's quite causing them. I guess it's been going on for around six-eight months now, but no matter how much I sleep, it is just never enough, and i'm still totally wiped out and exhausted. Now, I just can't sleep at night. I either lay there and stare at the celing, or I go to sleep, but I toss and turn and wake up all throughout the night. I am known for talking in my sleep, and being somewhat of a wild sleeper at times. I cannot wake up to alarms, I sleep thorugh thme, but oddly enough I don't sleep through the radio. I'm exhausted all throughout the day, and it is literally a struggle to stay awake althroughout the day, through my school classes then the things I want to do, yet I try to sleep..And I just can't.