It's good you recognized you have something to work on; it's the first step and very healthy of you. I'm going to note some advice below, but it's only worth what you paid for it: 0—it's a generalization and not specific to your situation.
Typically, if you are medically dependent on alcohol, you feel sick when off of it; this is because your body is dependent on it, and going off can put you in a very, very bad state. I've seen people go into commas doing this, so you must proceed very carefully. If you have an idea of your daily intake to keep you functional, you can try to drop 10% each week. e.g. if you know you need 50oz of vodka (or whatever your poison is) a day to stay steady state, then the table below:
Week | Ounces |
---|
1 | 50 |
2 | 45 |
3 | 40 |
4 | 36 |
5 | 32 |
6 | 29 |
7 | 25 |
8 | 22 |
9 | 19 |
10 | 17 |
11 | 15 |
12 | 13 |
13 | 11 |
14 | 0 |
It would take 3-1/2 months to drop to 0 ounces per day. If at any point you start getting sick, with nausea, vomiting, or general malaise, you need to bump it up a bit, back to the previous week's intake. Make sure you are drinking plenty of water as well. I'd suggest about 3.0 liters: 10-12 glasses of water daily to keep your kidneys suitably flushed. You might replace one of those liters with an electrolyte solution like Pedialyte.
Please be careful. Seek medical help at any point you feel sluggish, palpitations or short of breath, anxiety, etc.
Coming off is the best thing you can do for your health if you are dependent physically. You may need emotional support (AA is the best, although a bit on the religious side, too). Still, they have groups daily at reasonable times if you need community and can point you to community resources, almost anywhere in the western world.