When you first quit drinking, you will feel the temporary discomfort of withdrawal symptoms, but as the alcohol works its way out of your system you will begin to feel better, perhaps better than you have for years, as Robin explains in her post to our Alcoholism / Substance Abuse Forum:
Robin's Alcohol Recovery StoryI'm healthier, happier, less self-involved, have much more motivation, wake up hangoverless, I've lost 5 pounds, and have gained a ton of insight.
I dream more, both figuratively and literally. I sleep better. I have an appetite again. My daily exercise workouts have gotten much, much better since I'm not dehydrated all the time. When I'm with people I care about, I'm really there.
Everything Has ChangedI feel a sense of freedom that I haven't felt in years. It is so good not to have to stop and pick up a 12-pack or to head out in crappy weather to do so. I'm being constructive again. I'm reading before bed instead of just passing out. I'm playing the guitar again. I've gotten my self-respect back.
I could go on and on, but will sum it up by saying that nearly everything has changed. And that, my friends, is a very good thing and well worth the slight discomfort I sometimes feel without that beer in hand.