Pls help me get some sleep?!

Pls help me get some sleep?

i want to sleep but every time i feel my bed or lay on it..

all possible thoughts get into my head i cant stop thinking ...

plus im over stressed i dont know why...

i cant sleep unless its past 1am or 3 am
i want to sleep at 9pm but cant...

i tried not to sleep at from 7am to 9 pm so i would get tired but still im exhausted and cant sleep...

i tried to drink milk nothing happends..

plss help...

2 weeks ago
oh.. i fall asleep when my teachers start the lecture or if im riding a car....

i tried to reverse my activities...

no change...

valerian root (herbal), purchased from health food store and Walgreens has some too.