I'm new and just starting myself, but I know the cycle all too well. Typically, I felt like quitting while I had a hangover, but just as soon as it faded I was right back at it.
I also have young kids, and told myself I'd quit when they were born, when their birthdays rolled around, etc, etc, but never stuck to it.
I did have to quit for me. It's for the family, too... but it didn't do any good to quit for
them if I didn't even tell
them.
Reach out for help. You'll definitely get it here.