Lots of good advice here Sammy and Welcome!
The only thing I would add is that you don't have to tell anyone about your decision if you don't want to, and you don't have to offer an explanation to anyone if you don't want to or if you're not ready to. When I stopped drinking (finally) I just did it quietly. It worked for me. I just wasn't ready to expose myself and, even now, I tell very few people.