Lots of people swear by the 'more you drink the more you shrink' principle but I am not sure how scientific it is.
I struggle with the water, so always make sure I have a one litre bottle with me at work, that way I know exactly how much I have to drink at work and just sip on it through the day. I then also know exactly how much to drink at home and it is just a case of knocking it back through the course of the evening. I do struggle and my CDC suggested fizzy flavoured water with no citric acid as while it is not perfect it is better than me not drinking enough.