Call the crisis number and say the same things that you've said in this thread.
I know that's hard.
If it makes it easier, you could say:
"I find it hard to share my feelings, so I'm going to read out what I've written about how I feel:"
"I spend each day filled with regret, wishing I'd died when I tried to kill myself years ago. It would have saved an awful lot of bother. I wish I didn't have to keep dealing with this. I'm too tired to keep battling and if it keeps happening then it's pointless fighting it. I always said this would kill me one day."
"Five years ago I drank a lot of wine & ODed on various meds then tried to slash my wrists. I wish I'd done it properly."
"I just wish I were already dead. ... every day I regret that I didn't die before. ... I wish I weren't here ... So I fake a smile and go to work and talk to my friends and pretend everything is lovely. It's torture. "
^ all of which is things that you said upthread.
That should get the conversation started at least.