I agree with airwick. I am 25 days sober after drinking heavily for the better part of 30 years. I am afraid that if I drank again it would take me another 30 years to quit again.
But also for me I don't want to drink one drink. If I drink I would drink to get drunk. One drink won't do that. So for me if I can say no to the first drink I won't be drunk for the next 30 years.
Based on that it's easy to say no to one drink!