Hey, Well Done on Day 4...be proud of yourself ..and keep feeling that rush of pride when you say just for today, because soon it will only be the pride you feel. The constant thinking of drinking does fade, I promise.
I personally would avoid the NA beer, as other have said, it is just replacing the habit. I needed to change everything surrounding my drinking habit to remain sober.
Chamomile tea and sparkling mineral water work for me now.