A cold beer or two is not a big deal. Eating refined sugars, hydrogenated oil is worse.There are ways to enjoy life without polluting your body with alcohol , tobacco or other controlled substances.
By setting your mind to have fun Like doing things you would not normally do like surfing or some other physical activity you have never tried. One thing I would recommend to any substance abuser is to make love with out being drunk or stoned or numb from any other substance. It is the best.