Join a very non exclusive club I'm afraid! What have you tried.....?
I've gone from being a waking insomniac (goes to sleep ok, then wakes up around 1am, feel able to rule the world from then until about 4am, then back to sleep and knackered), to not being able to get to sleep at all and waking every 1-1.5 hours. I've done all the usual, eating early, warm baths, milky drinks, no tv but nothing works.
I have also tried Bachs Flower Remedies (White Chestnut, which is supposed to stop you worrying), Nytol etc but to no avail. My mum is in hospital again and I'm worn out, so seriously contemplating going to GP for pharmaceutical help. It's gone on for years, and didn't go away on holiday so I don't think I have much choice.
So, not much advice really, but plenty of sympathy!