When you are just falling into sleep at night, just ready to fall into sleep, go backwards through the memories of the whole day. Do not start from the morning. Start right from where you are, just on the bed - the last item - and then go back. Then go back by and by, step by step, just to the first experience in the morning when you first became awake. Go back, and remember continuously that you are not getting involved.
You are just like a river flowing: the forms are flowing. In your childhood you had one form, and now you do not have that form; that form has gone. River-like, you are changing continuously. So when in the night you are meditating backwards on the happenings of the day, just remember that you are a witness. Just look at the whole thing as if you are looking indifferently at a film.
