I find that a good systematic focusing technique is to 'look' at the patterns inside your closed eyes when lying on your back. When I do this I see very little

I find that a good systematic focusing technique is to 'look' at the patterns inside your closed eyes when lying on your back. When I do this I see very little at first, maybe some fuzzy indistict patterns ... but then the patterns become progressively more detailed until I am in an interesting dreamlike state with fascinating visual effects and characters. Sometimes I find i can influence these dreams - I guess this is akin to lucid dreaming. A most entertaining way to fall asleep!