This is solid advice. I only drink water and milk now. I lost about 70 pounds and I have kept it off.
I had to stop drinking soda because they diagnosed me as type 2 diabetic. Taking those pills was horrible because they make you dizzy. I followed the diabetic diet, lost the weight, and now I don't have to take those deplorable pills anymore. I still follow the diet to keep the blood glucose levels down.
It takes discipline loose weight and keep it off.