In my LD last night I studied the ground for about 20 seconds like it was recomended. I felt the ground and percieved the tiny details. Wehn I looked up, I had perfect clarity for 5 seconds, then the dreaded black fog came and I wasn't lucid anymore! Is this because I wasn't grounding myself in the dream long enough? Was my control weaker because it was a DILD? Could it be that I just arrived at the end of my REM period? Its so frustrating because for my past 3-4 LD, I can't seem to stay inside them