Boy, oh boy...I can relate.
My wonderful family goes to bed, and I sit in the downstairs den and drink all night long. It got to a point where I didn't even know WHY. It was purely habit. I would get lousy stinking drunk by myself, bored out of my skull and feeling bad for letting my hobbies and health go down the drain.
You are not alone. I never drink during the day, and I don't drink in front of my son. I do it all alone...like its my little secret thing I get to do.
Well, it isn't thrilling or fun or healthy or productive and I, like you have said "enough is enough." I just hope it isnt too late to salvage my health.
Congratulations on posting here. It is a very good start. We are all here is you need us (even though I am pretty new at this, too...)