If you need to drink, switch from beer to spirits (no mixers, neat or on the rocks--only way to drink them anyway.) You can not target belly fat, your body will decide on it's own when to start consuming this for energy. Eat at least 5 times a day (3 HEALTHY meals, 2-3 snacks.) Make sure that you are taking in enough calories; if there is a huge deficit between what you need vs. what you are actually taking in, your body adjusts your metabolism and go into what is known as "starvation mode" (your body will hang onto all of the fat it can in preparation for what it perceives as a famine.) Lastly, you have got to exercise, and set your sites on a goal of 1-2 lbs a week (which means a daily calorie deficit of 300-400 calories a day.) If you have a huge calorie deficit, you will wind up spinning your wheels. To figure out how many calories you should be taking in, use this formula for a good estimate:
Body weight X 10 = Resting metabolic rate (what you need to survive)
Resting metabolic rate X 20%= Daily activity burn
Resting metabolic rate + daily activity burn= calories intake goal
From there, figure out approximately how many calories will be burned in whatever form of exercise you are doing and come up with a meal plan that puts you at a daily deficit of 300-400 calories.
Most importantly, quit eating the garbage (chips, fast food, pizza, soda, ect.) Make the calories that you take the good kind (lean meats, fresh fruits and vege's, whole grains and oats.) I followed a plan similiar to this and have lost 30lbs and cut my body fat% from 29% to 18% in about 5 months. Good luck, hope this helps.