i wish i could answer your question mate. I also have a really bad time getting to sleep at night, it takes me ages to relax before i can get close,
also i feel funny at that stage before feeling alseep, as i can feel myself sliping i have to wake up quicky becasue i get scared of that in-between stage.
When your alone at night, this brings out all the stress of the day "had an arugument with my mum" "i hate work etc" Sounds like what i told the doctor,
the best thing to do is make your body tired, like do exersise a few hours before sleeping. Eat healthy natural foods during the day, make sure your bed is the centre of relaxation, dont eat after 8o'clock, drink lots of water etc Its different for everyone else, but these im sure play a part in it.

Good luck in finding your sleep

The internet must have some cool information that can help.

Remembering dreams is difficult, but finding your natural REM cycle again will help you to remember more (I THINK)