BeerNut.......Self employed here too. A general contractor with ten employees, that has definitely enabled me to drink during the day and they cover my ass. A few phone calls to them at 7am and then pop open a frosty Corona was my MO. I'd go for months between binges, not drinking every day, sometimes not for a few weeks. But then something, usually at work would get me PO'd enough where I'd go over the edge on a binge.
Good luck to you....that damn self employment can be enabling to this issue for sure.