Whenever i try to fall asleep, i try to focus my mind, but im having issues trying to get asleep while being focused. I focus in on the swirling lights inside my eyes, and block out all thoughts but attaining lucidity in my sleep. The problem is, when im at the point when im about to fall asleep, and the lights in my eyes are the brightest, i fell numb, and feel a little shudder. Then, my heart starts beating VERY fast, and i eventually lose it. However, if i do not concentrate on lucidity, or let my mind wander, i fall asleep fairly easily, but i do not have lucid dreams. Any tips on how to overcome this? Or am i doing something wrong?