Whenever I try to fall asleep while maintaining concentration on a given concept, rhythm, image, etc, I inevitably end up lying awake until I give up and let my attention wander. As long as I'm consciously trying to accomplish something (i.e. maintaining a steady concentration), I can't slip into sleep. It's like some sort of warped Protestant work ethic mechanism-- no rest until the goal is fulfilled, and concentration somehow implies a goal. Needless to say, this makes using the FAT and VILD techniques well nigh impossible. I'm wondering if anyone else has or has had this problem and if there's anything I can do to solve it. Am I relegated to only using the non- focused-attention type techniques (such as WILD), or is there some happy-medium of concentration that I'm missing?