Alice,
Glad last night worked out better for you. Maybe consider this idea. For amusement purposes only (or perhaps a life saver).
Originally Posted by
Alice11 
Well, I drank last Friday night because it was a co-workers birthday.
Do you really think that's why you drank last Friday? Can you say that out loud to yourself? "I made a decision to not drink. I drank because it was a co-worker's birthday." You made a decision to not drink. What possible difference could it make what day of the year it is?
It sounds like you know what might happen if you drink. You described the occurrences from last Friday. I bet you've had similar occurrences before, and I bet that's why you decided to quit drinking.
You made a choice to not drink. Last Friday, you failed to manage that choice.
Originally Posted by AA Big Book, 1st Ed.
The fact is that most alcoholics, for reasons yet obscure, have lost the power of choice in drink. Our so called will power becomes practically nonexistent. We are unable, at certain times, to bring into our consciousness with sufficient force the memory of the suffering and humiliation of even a week or a month ago. We are without defense against the first drink.
The almost certain consequences that follow taking even a glass of beer do not crowd into the mind to deter us. If these thoughts occur, they are hazy and readily supplanted with the old threadbare idea that this time we shall handle ourselves like other people. There is a complete failure of the kind of defense that keeps one from putting his hand on a hot stove.