Hopeless

Hi,

I've had chronic insomnia for a little over two years now. Generally, I get about 5-6 hours of sleep. However I go some nights (about 2-3 times a week) where I get as little as 0-3 hours of sleep. Ive tried changing my sleeping habits and hygiene and nothing works:

I've tried the following but no luck:

Herbal Supplements: Melatonin, Valerian Root, Chamomile, Passionflower

Other medication: Ambien, OTC sleeping aids (e.g antihistamines)

No caffeine after 3pm

No lights before sleep (including phones and tablets)

Keeping the temperature cool

Reading (non e-books) until I get sleepy

Getting out of bed after 20 minutes if I cant sleep, doing something until I feel sleepy then getting back in

Daily exercise (before 6pm)

Mindfulness (concentrating on deep breathing), muscle relaxation techniques, and stretching

Getting daily sunlight

Some CBT for avoiding negative thoughts associated with sleeping

I've memorized all of the above and followed them like a ritual yet I still get an average of less than 5 hours of sleep. I've kept a sleeping diary to see what works and what doesn't yet that hasn't helped. I just always feel wide awake and alert, even during the day I can't manage to take a nap because I'm not sleepy. I don't know what to do at this point especially since sleeping pills won't even make me fall sleep.