Hi I'm so sorry no one has replied yet, I only just saw this post. I expect you already know what there is to know about 'sleep hygiene', if not, it's worth a Google.

MUCH MORE IMPORTANT if you're still feeling this desperate, I urge you to phone whatever crisis or suicide helpline you have in your country. The British Samaritans have helped me many times when I have been at my wit's end in the middle of the night or early morning.

They value you as a human being and are always pleased when someone who needs them phones. You don't even need to be capable of speaking, they will still be there with and for you.

I urge you, don't suffer alone. You don't need or deserve to.

This reply is heartfelt, I have had similar thoughts and know something of the distress and pain that goes with it. Please phone for support, it makes a difference.