You know when you are playing golf, and keep hitting duffs and not doing well, and finally hit that one amazing shot that gives you a sense of bliss?
That is a huge dopamine drop. What your brain does at that point is unattaches some neurons and reattaches them to some other neurons. If you hit 10,000 of those amazing shots, you develop "muscle memory", and can play golf like Tiger woods. Those neurological pathways are set, and you address the ball, take a back swing, and your subconscious calls on those pathways to help you make a good shot.
But, we all know what happens if you let your frontal cortex start deciding how to make the shot. You get the yips. Your frontal cortex does not have the knowledge or memory of the exact muscle movements required to hit the ball straight and well. You duff. You chili dip. You slice.
Then, you have to figure out a way to get your frontal cortex out of the way, and get your muscle memory back into the game. In Tin Cup, it is something like putting a tee in your sock rolling up one sleeve, and doing other things to make yourself look rediculous.
What sucks about alcohol is that the very same dopamine routine kicks in to make you drink. When you hit a trigger, whether it is bad feelings, regret, good feelings, whatever, that "muscle memory" keeps nagging on you to take a drink. You have a couple, and that is where the problem begins. That frontal cortex, that would give you the yips when golfing, or tell you to slow down / stop drinking, is the first thing that alcohol attacks. It puts your frontal cortext to sleep. The only thing you have left are those stored procedures that tell you to get another, and another, and another, and another. You can't get the drinking "yips" because cortex has long gone night night.
Alcohol is insidious, because it starts its attack against the one thing that can stop its attack.
****.