You got out of bed mate, that is a start. Scary reading your posts as it reads like you are living my life. Except I'm not an Electrician, wish I was! What's scary is the feeling that there are only two options, taking yourself out of the equation or finding a way. And right now neither seem to be working. Please don't take the former. I've suffered Depression for 20 years but I've never considered ending it all, probably scared they'd find out all my secrets and besides, who would take care of my cats. Finding a resolution is harder, but you are amongst friends here.
If I may, the drink is the reason you can't sleep properly. I can't sleep unless I pass out but after a week without I settle into it. I crave it, damn, I crave it, but when I'm drinking I go to bed at 12 and wake up every damn time at 4.17 with my body craving booze and it goes on and on. If you can give yourself a few dry days, you might find the sleeping sorts itself out. But I feel your pain, I really do. Get that Appointment and don't leave until they HEAR you. Drugs aren't always the answer. Have you considered therapy?