I tried it for one night but it was too much effort to try every night.
You can try a certain method that's roaming around the internet for a while thanks to a certain member.
Take a nap for 1-2 hours. Wake up, yes, you will be feeling like shit but that means you can go to bed easier again so its good. Stay awake for 30 minutes to 2 hours, whichever you want, and then go back to bed, while imagining in your mind, a sound, maybe replaying a song in your head, or just repeat your name in a steady beat, it doesn't matter.
By 10 minutes, if you haven't felt anything, then that means you got the nap wrong or your sleeping schedule isn't primed for it yet.
Now, once you feel like you can't move (sleep paralysis), and you feel like a switch has just occured (can't really explain it but you'll know) vibrations will occur (you can't miss it), once that's completed, just think that there is a rope in front of you and that you are pulling it. Actually, don't even think, just do it, the rope is there (which it really isn't, you just need a leverage to start moving in the astral plane), and you are pulling. Once you've done that, you will be floating, and don't be surprised that you're out looking at yourself sleeping.
Get out, go fly, go visit someone, go upstairs, doors will be unlocked, furniture might have changed, perhaps an entity will come visit you, ask for your guide if you're into that stuff, but control it, otherwise you will be back to the dreamworld. It's all about control, controlling the conscious. If you feel like you're losing it, rub your hands and blow on them in the astral and keep moving, otherwise you're back to dreamworld.
http://www.unexplained-mysteries.com/forum/index.php?showtopic=183616