In reply to JeanG:
I suffer from stress-induced insomnia, and whilst I’ve been fortunate that I’ve not been in a situation where it’s happened for a few years (nor one that’s as horrific as yours, and I’m truly sorry for your loss), when it does it takes over my life.
Reading a book & drinking a horlicks before dozing off on the sofa can help at times, but many a time I’ve found myself watching the sun rise from atop the Malverns after driving over & ascending in the dark, armed with a flask of coffee for breakfast. You’re knackered going up, knackered coming down and utterly knackered through the rest of the day, but I often found on those days that if I kept myself busy until bedtime, I’d finally get off to sleep.
I hope you get up your mountain, I truly do.