Hi Carol;
What TC says is so true, and no matter how bad it seems you always have options, the first of which is to cut out the alcohol, after that things do get clearer, you start to find out that there is more to life than booze and depression and hurt, and that you can find a way out of the darkness you find yourself in.
Give yourself a chance, you deserve it and you deserve to be cared for, first and foremost by yourself. Take time for you and what you want and need. You need some TLC and you are the best one to know exactly what kind you need. A nice bath, nice cuppa, a nice meal, maybe just a lie down with some nice thoughts, find a dream, explore it, take it for a walk, cherish it and let it take over you and offer encouragement to you to get back to you, the Carol who deserves better and will get better.
Carol, you need to take care of your body too, drink water, eat, rest, give yourself a chance to heal, to recover, to go on. You can do it, you want to , you're here, and that says a lot about your desire. Once you have yourself together, then you can start recovering your relationships with your children.
A very long time ago, I made the mistake of staying with alcohol and it cost me the love of two daughters who have never spoken to me since. This will never leave me, and I will always wonder what would have happened had I stayed in their lives even from a distance. You will always be their mother, and as long as you do your best to maintain a relationship with them, they will be there for you. And nothing and no one can ever take that away from you.
Have a couple of these

, or three, and take care.
You are confined only by the walls you build yourself. Anon
There’s only one corner of the universe you can be certain of improving, and that’s your own self. - Aldous Huxley