When you cannot sleep for the mind is busy, surrender. Simply state this word with the awareness that by paying attention to the mind you are giving it fuel. With surrender you acknowledge that you cannot control the whirring and worrying. And so, you just let the mind go. And a funny thing happens when you do so. With no more attention to the chatter, sleep ensues. Surrender, dear one. State the word like a mantra and rest well. You are so very loved.