Every milestone like this one adds another tool, another resource in reserve when the next challenge comes along to be met. First Hallowe'en, first this, first that, and soon you realize that it doesn't really matter what the calendar says, or what has happened before, you are solidly permanently sober.
Getting important stuff done instead of drinking can become doing fun stuff instead of drinking if you aren't careful. Just kidding there, that's what should happen, what will happen. Keep adding stuff you like to do and sometimes that you need to do, and you will wonder why you kept up the drinking for so long. It is such a waste.
You are on the right track there, Bookerman. Well done.