This is correct and very very important. Your brain is physically changed. Alcohol's primary effect is the increase in stimulation of the GABAA receptor, promoting central nervous system depression. With repeated heavy consumption of alcohol, these receptors are desensitized and reduced in number, resulting in tolerance and physical dependence. When alcohol consumption is stopped too abruptly, the person's nervous system suffers from uncontrolled synapse firing. This can result in symptoms that include anxiety, life threatening seizures, delirium tremens, hallucinations, shakes and possible heart failure.[55][56] Other neurotransmitter systems are also involved, especially dopamine, NMDA and glutamate.[12][57]. Please do it with professional help, in a hospital setting. An addition recovery/psychiatric hospital, not a "normal" hospital. Search online or in the yellow pages. You may have to travel some to get there. I've seen many addicts withdraw and some have no problem, but some have life threatening seizures and other absolutely terrible physical symptoms. I heard one person say "this is the worst pain I've ever experienced in my life!" Also, not being able to leave prevents you from drinking to stop the symptoms, they are locked facilities, when you sign yourself in you agree to be there for at least 3 days. The hospital will provide you with proper aftercare as well, tailored to your needs. They will also control your symptoms with medication, depending on what the symptoms are. You get checked up on constantly. Getting the psychiatric care from the hospital (and followup) will help you get to the root of the problem - why you drink - and you can treat that, instead of just treating the addition itself.
All this care is generally covered by insurance.
If you aren't very religious, please skip AA and all the twelve step programs. They are really offensive to atheists and non believers. (I have read part of the AA "big book" and had to stop because I couldn't take any more. The section on "what if I don't believe in God" was especially offensive) Seek CBT or other non-twelve step treatments. Again, the hospital will help with finding a program for you and referring you there, often taking care of the paperwork for you.
You have acknowledged you have a problem and wish to get help. This is the most important step. Please note: this will not be an easy journey, this will be difficult. You will have to work for it. You probably will have to change many things about yourself, including your thinking.
Good luck and I truly wish you the best. I am always happy when addicts get better, I grew up with an addict parent, and I know what it can do to yourself and others around you.