I have been trying to have a LD for about a week now with no results. I'm not letting that discourage me though. But I have a question, mabye it's the way I fall asleep?

I usually imagine a scene and let the scene carry out and I guess I fall asleep to that. I've recently been using a MP3 that has music and a guy saying that I am aware of myself dreaming etc. But it hasn't worked either. Any tips?