I really want to stop...but i get the urge?

Okay, it started out by taking on half of a 10mg percocet a day. now im taking a whole to 2 a day. i start out the day feeling alright, then at the end, i get it in the end, that i have a pain somwhere and have a half of one, and then if i stay up late, have another half... im not addicted, but im gonna stop, im gonna throw the rest of the bottle out.. this has been going on for about a year(on and off for months at time)