Yes - Give it up. Drink water instead. The artificial sweetner in diet soft drinks is horrible! I am not sure how it works, but a personal trainer told me once that your body doesn't know how to break down the sweetner. She said it was actually better to drink regular soda because at least your body knows what to do with the sugar!!!

(Of course she said stay away from soda period,,,,,,)
I pretty much gave it up except for maybe one or two a week. My down fall now is drinking green tea and putting 1 packet of Splenda in it. I figured Splenda had to be better than Equal.
Drink water - Lots of it and I have heard that really cold or ice water actually helps with weight loss. Your body reacts to the cold water differently than drinking regular room temperature water.