Sleep depravation one night led to a chain of sleepless nights. Benadryl (diphenhydramine) sleep hygiene melatonin and no stimulants won't help how can I stop the chain?

Insomnia. There are tons of different sleep aids available, but at this point your insomnia is also caused by the fear/anxiety of not being able to fall asleep. I've had good success with short as needed use of Lorazepam in select patients. It works like a champ for them up to a week and then they are able to sleep on their own. There's a concern of them being addictive, but short and as needed use is ok.
OTHER ISSUES?? Can you possibly have another diagnosis like a mood disorder ie. Depression or bipolar disorder? Speak with your physician about other avenues to pursue.