Insomnia is when your head is filled with so many disjointed clattering thoughts that it's like having a machine gun go off in your head. Or when the moon is a bit too full. Or when the day has been quite calm but as soon as you lie down your personal big scary monster starts creating havoc by whispering mean things in your ear. Or it's when a child turns up in your bed because he has had a dream about sharks eating him, and by that time you're wide awake and can't get back to sleep. I had a night like that last night. Nothing seemed to help. No amount of lavender oil or warm water or bedsocks. Too much thinking; too much projecting into the future. So today I am a zombie, drifting around and putting cups of tea in the fridge.