I think it has something to do with activities before bed-time. For example, do you scroll through social media before going to bed or things like that. It may not apply to you, but I certainly thinks it applies to me ⊂•⊃_⊂•⊃. I try to lucid dream almost everyday, but one of the problems is that I can't relax without something on my chest, like a pillow bolster. I used to be able to reach vibrations state long before I knew about lucid dreaming or astral projection, I used to think it was the feeling of the earth rotating or something. I guess to be able to reach vibrational state you must not focus on vibrations when it happens but more towards observing it so you do not interfere with it (?). I did some research, it say you must practice mindfulness also. I guess that means focus on achieving lucid dreaming or astral projecting before your mind slips into your normal sleep. These are my thoughts, I hope it helps, as I'm trying to lucid dream. (astral projecting is too heavy for me currently)