I gave up regular sugar filled sodas.
This being said I am now a certified Coke Zero addict. Gods forbid you speak to me before I've had my morning fix. I really do try and drink water but generally I feel if it's not caffeinated why should I drink it? (I worked night shift for yeeeears and it's had a definite effect on me)
Crystal Light single packets are my best friend though. Seriously, they have a TON of flavors and you just dump the adorable little packet into a bottle of water and shake. Ta da! Instant yummy.
Nothing beats the original lemonade though. I could drink that every day.