As you've heard there are reasons why avoiding diet drinks is recommended. I, personally, drink diet drinks and it doesn't seem to be making a difference in my weight loss. I don't count them in my water intake, though -- and I limit to one or two a day. For most people, a Diet Coke or Diet Pepsi now and then is no problem. You can decided, too, about the caffeine. I try to drink caffeine-free at home.

The bottom line is ... there is no one "right" way to do this woe. It's whatever works for you, what fits in your lifestyle, what sacrifices you're willing to make, what you want to keep. It's being intentional, trying new things if you hit a stall, and keeping with it for the long haul that matters most.