1.) Is it possible to have lucid dreams all of the time or only some of the time?

2.) I just tried another attempt at a WILD and it was very strange what happened. I never saw any random flashes of light or color but in about 10 minutes my body went numb but then after that still no colors or images. My mind is 100% relaxed and stress free but I can't manage to form any images or see anything. Has this happened to any of you?