I'd say start reading and posting here more often until you get a plan fully in place. If you go sober a few weeks and then relapse because you're thinking you have self control, I'd suggest reading your earlier posts that brought you here as a reminder. One thing stuck out to me in your post. You drank because you thought you had self control but before you said that, you posted "my drinking has INCREASED" since the few weeks you were sober.
Shake up the plan a bit. Forabetterlife really has some great suggestions. I was that kind of drinker at night too. It's hard to break that deadly evening routine. But with some work, you can. For you and for the kids. believe me, they know something is up even if they can't verbalize it. Mine did.
But you can do this. One day at a time. In the beginning it helped me to think that I could drink tomorrow if I wanted, but just for today, I won't drink. And then repeat that to myself in the morning, today I won't drink. Just for today.