Only bromazepam helps but a few years ago I became reliant on it. This is such a prob that today I had to miss college because I couldn't get out of bed! I have a lot of stress:had cancer at 11, toxoplasmosis at 17, heart failure at 27, and take codeine regularly as iv become reliant on it. I am a severe case I know! Haha! But I don't actually feel stressed or afraid to go to bed. I DO go to sleep in dark, do everything to help induce sleep. I often fall asleep but wake up a few hours later and don't get back to sleep. Now it's affecting me studying which is a problem. Doctors in this country are no help- I'm sure you'll appreciate due to my health since a child iv tried hard to find a good gp but there's been constant issues so I always had to go to France to be cured/diagnosed but live in UK.
I am sure it is easy to find a good list of practices that help one get a good night's sleep. I'd not try to recall them here ... but suggest for starters make sure you sleeping area is dark and quiet ... don't eat the couple of hours before bed time. A lot of liquid. even water, in the two hours before bed time can force a need to get up, ant then it may be hard to get back to sleep.
Melatonin helps some, it is a "natural" ingredient that can help one "train" the body it is time to sleep...make that the same time every night.