Are there any cures for severe insomnia? (Haven't slept all night in 21 years, 10 months. No diagnosed cause!) Been to sleep clinics on two continents, psychiatrists, psychologists, anxiety specialists, neurologists, and family doctors in Australia, US, Canada and the UK. No root cause found. Zopiclone (worldwide except US) and Lunestra (US) help -- but side effects are Life- and Career-Limiting. Hypothesis: for many people, once broken, the ability to sleep simply can't be restored. (Like turning on a gene -- like turning on puberty -- you can't go back.) Thoughts? (Problem is not in going to sleep but in staying asleep and sleeping deeply enough. REALLY tired of doctors who tell me to drink milk or that "I'm getting more sleep than I realise" or other naive nonsense. The medical community at large seems to Be Asleep on this one. (Sorry!)) Has anyone ever been CURED of this?

Summarized question: Are there any cures for severe insomnia?