Trouble with Lucid Dreaming.

[Nephalim Slayer]

I've been lucid dreaming for the past few months, I use Binaurul Beats for extra help and I've been successful at lucid dreaming for a while, but lately I haven't been able to. I haven't changed my method but for some odd reason I just can't do it anymore. I have never tried to dreamwalk so I don't know what could be happening. Any input?