Sometimes at night I find it very difficult to sleep.

Although my body is almost aching to sleep; my mind just keeps buzzing, going over and over the events of the day.

If I lie awake long enough, I almost feel so relaxed and yet awake that sometimes I can convince myself I've reached another state of consciousness, but I doubt that really happens.

What annoys me the most when I'm lying in my bed, desperate to sleep but unable to, is hearing the clicking of my dog's feet on the laminate flooring.

Irregular and loud, it always seems to jar me, just when I can eventually feel myself drifting off to sleep.

My dog has been dead for 12 years.