I Have Insomnia

I sleep well most of the time but have periods where I just don't seem to be able to sleep at all. I'm guessing this is related to bouts of depression but I know sometimes it's just down to my mind being overactive late in the day when I should be relaxed and ready to sleep. I find my creativity is often at its best during the night when this happens. My doctor has prescribed a mild sedative to use during these times, so it's rarely an issue now, though I do miss the the odd occasions when I resorted to playing guitar right through the night.