I'm gonna respectfully disagree with LaFemme on the concept of "hitting bottom." That doesn't mean going as low as you can go--it just means that you've had enough. Enough pain, enough embarrassment, enough problems, that you are willing to do what it takes to get sober and stay that way.
I truly believe that unless one has "had it" with drinking, it's very, very difficult for most alcoholics to quit. And even when you HAVE had enough of it, it's tough for a lot of people.
I do agree that every bottom has a trap door, though. It's always possible, if you don't do what you need to do to maintain sobriety, to slip further down the ladder. You never know how far you might fall before you can stop again.
Glad you made it through this evening. Posting your thoughts here was a good idea. You trusted others when you couldn't trust your own thinking. We all need to do that now and then.