Welcome to SR and congrats on your three weeks sober! I too was hiding my drinking, or so I thought. Turns out my kids knew when I was drinking despite my efforts to hide it. I recently relapsed and am now on day five. I'm determined to make it this time. I'm too old to keep doing this.
I also find SR to be a lot of help in staying sober. I should have logged on and read/posted before I picked up six days ago. I will do better this time. Together we are stronger than we can ever be on our own.