Only drink water. I know it might sound weird for some, but the amount of calories that people get into them by drinking all kind of juices, alcohol and all kind of drinks is insane. You if want to spice it up, just drink coffee (high quality, "hipster" brewing methods - you will never feel the need of sugar or milk to make it drinkable) and tea. This includes orange juice or any other kind of fresh juices. Just eat the fruits, but when drinking, stick to water. This might not be a silver bullet, but it will be an important step in weight loss.
Swapping fizzy drinks and juices with water can easily save 500 kcal a day, which can tip the balance from net caloric surplus to net caloric deficit, that is, from weight gain to weight loss. 10/10 can recommend.
