It's not the answer for everybody, though. Some people don't benefit from them at all.
I highly recommend you find yourself a counselor. You've got a lot of the red-flags of an addiction right there, and you know it. What you need to do is find reasons for "sober" to be a good way to live your life, so that you don't have to escape. People do things for a reason--you're drinking for a reason, to fill some kind of need. Whatever that is, you have to find some other way, some healthier way that won't cause the damage that drinking too much does.
You have a lot of insight with the "I'm addicted to the effect" statement--that's what we call psychological addiction; it means that, while you may or may not have a physical tolerance, you've grown to depend on it much more than is healthy. Psychological addiction is the heart of an addiction; anybody can sober up (especially with a doctor's help, which is recommended if you're drinking heavily and have been for a while). But in the time you've been using alcohol to "solve" your problems, you've gained a lot of habits that will be hard to break--now you'll have to find new, better ways to solve your problems, and find things to do instead of drinking. It's a huge change for anyone, and that's what makes it tough.
Worth it, though. And doable. Plenty of people have done it; so can you. Having a sensible counselor to help you can give you a big advantage. Some people benefit from support groups; others not. The important thing is that you do whatever you have to do to solve your own problem with addiction. Your own lack of willpower is a problem that you can understand and solve. Even relapses can teach you things that you can add to your mental library of defenses.
I've never had a physical addiction, but I do tend to cope in unhealthy ways. I know it can be hard to learn to deal with your problems in a better, more constructive manner--but I also know it can be done. You're worth it; life is worth it. I'm probably not even telling you anything you don't know already--you know you've got a problem and that you've got to start working on it. Defining the problem is half the answer, really. Good luck.