I've said it here before about beating my own prior alcoholism: Hitting these milestones feels great. Stay the course. The best day is yet to come. It'll be a day you won't know in the moment. You'll pass some big number of sobriety time and it won't even occur to you until well after it happened. You'll realize it later and go, "Huh, didn't even think about that." Because not drinking will have just become so normal it's unremarkable. Congrats.