if you have medicine that aids you in sleeping: take that (muscle relaxers, anxiety meds, etc.)
in addition: no caffeine ~6 hrs before your goal bedtime, journal out any anxieties you had/have about the day/the rest of the week, have a good experience before bed (watch a show you like that relaxes you, listen to a favorite mellow album, talk to a good friend; stuff like this), if you have a routine for getting ready for bed then follow it (washing your face, brushing your teeth, tying up your hair if you do that, etc.), then just get warm, have the room set to a low enough temperature to facilitate sleeping, and tuck urself in for a snug night of sleeping! :D