Why do I dream of drinking?

I am eighteen, and have never had more than a bottle 6% alcohol beer, and that boottle was the most alcohol I have ever consumed. For the past few nights, I've had dreams where I am drinking. In one dream I was hiding wine under my bed and drinking it late at night. Another I am constantly going to the cabinet for a glass of champagne. Last night, I dreampt I went to a bar with my friends and drank a cocktail, then when to germany where drank even more and went so far as to actually get drunk.

I'm anxious, because my family has a history of alcohol addiction, and I don't want to succumb to addiction as well. If anyone could please tell me what this means, I would. Greatly appreciate it.