For those who are alcohol dependent, I do apologize, so, take this with the spirit with which it's intended.
I look at it this way, it's actually the beer that depends on me. If I don't mix grains and water, boil it with hops, add yeast and ferment it, it can't exist. So it's my job to bring beer to life. I just have to drink it to let it finish the job.
Honestly, I've asked myself this question before and to prove myself not dependent. I usually go a week or two without drinking, just to make sure it really is the taste I enjoy and not the effect it has on me. So far, it has been easy for me to prove that I am the one in control, not the beer.
In all seriousness though, if you really do feel it's becoming an issue, take the time to prove to yourself that the beer doesn't control you, if it does control you, please seek help, there is no reason to be ashamed of that.