“One of the easiest things to do, is simply drink water instead of other drinks as often as possible. It’s also good for your body/well-being/teeth.
If you’re going out to a bar, obviously you’ll be having beer or cocktails or something, but if it’s a hot day and you’re thinking about buying a bottle of soda or juice, just have some water. You carry your own cup, bring water from home and fill it at the tap. At work, keep a cup you can refill from a tap. If you’re outside, just choose not to buy a drink. Find a water fountain or if you go to Starbucks, they’ll give you water for free (ask for a glass, not a paper cup).”