I never knew I was an addict

So I decided to try to give up my ever loved Diet Pepsi about 3 days ago, and I never knew how hard it would be. I have been so tired and just cranky and all that great stuff. I truly am going through withdrawals and I don't like that feeling. I hate the feeling that I have to have something to get through the day. I not only gave up my diet Pepsi but my morning coffee too so I am doubly grumpy. Yuck.
Wish me luck ,I realized that the only other thing I can drink besides water is tea so take that. I don't like splenda and definitely don't use other artificial sweeteners so if any of you have suggestions let me know.