Welcome! Well done in taking that first step towards a new life. It's good that you have realized when you think about a drink, you have to get a drink. That seems simple but knowing it all starts with a thought is a pretty important concept to understand. You'll hear this a lot in recovery, but this is what we mean by saying one is "powerless" over alcohol. It doesn't mean we are powerless in all aspects of our lives - just until we have worked a program of recovery, willpower doesn't tend to work for a lot of us in the area of drinking.
In addition to the support here at SR, consider using this momentum you have going to find a local AA meeting, drug and alcohol therapist, or both. It really helps to meet people in person, and a therapist could help design a plan for you to follow. I know how hard it is to imagine making this kind of change in your life, but it's worth doing, and any help you can get will be valuable. Hang in there.