well i used to always have a soda with pizza at school everyday almost, but then i developed ulcers in my stomach after continual abuse on the sodas and spicy foods. after that, i was basically forced to stop drinking soda and unhealthy foods because i would have HUGE sharp pains in my stomach during certain periods in the mornings. after about a month of not drinking soda, i realized that i lost the urge and joy out of drinking it. now i hardly ever drink soda, maybe on occassion if im at a friends house and theres a party or if there is absoluetley nothing else better to drink. overall, ya just try and stop for a few weeks and youll basically lose the urge to drink it.