I NEED HELP, OR ANYONE WHO CAN CALM ME DOWN!!! HELP?!?!?!?

okay. i tried everything the answeres said, but... ARGHHHH!!! i keep on thinking bout the zombies in left4dead. im not going to be able to wash my hair tonight!!! * throw pillow up in air.plops down* im in my room right now. its creepin me out. any ideas on what to do now. plz answer quickly. IM FRICKIN OUT!!!!!!!