Anybody CAN have an LD, but for some people it takes a bit longer. I still don't know for sure if I've had an LD, and I've been trying for quite a long time too. I think I got into SP though, I heard someone calling my name and it was getting louder and louder. As I relaxed it stopped, but when I tryed to move it started again.

Just try to WILD in the weekend. Stay in bed for 10-11 hours, when you wake up, don't move, and try to WILD.

The 10-11 hour time spent in bed was the key for me. After about 8 hours of sleep I kept waking up and falling back to sleep repeatedly. First time I woke up, I moved, and I remembered myself to lay still next time I wake up. I did, and it worked.