Try to not rely on the booze, it's a depressant and won't help in the long run. I managed to give it up when I got to the stage of taking the bottle to bed, just in case !
If you can talk to others that's good as, when you actually voice those mad thoughts that just keep going round and round in your head, they do eventually subside a little. Don't think that other people don't want to hear about your problems, this is the depression speaking, mostly people are interested.
People kept telling me 'when 12 months has passed you will feel better', well I didn't and this was when I tried suicide. A year is not a magic marker after which all will be well so don't focus too hard on the anniversay. However, the passage of time is a help and more and more scar tissue will grow over the hurt. It is now 18 years since my son was killed. Greaving is a long, drawn out process but there is light at the end of the tunnel and one day you will realise that your pain has diminished to the point that it no longer dominates your life. Don't let yourself get to the point where you can no longer face living before you ask for help. You can climb out of that black hole, just look up and see the helping hands extended towards you and grab them.