How do i stop my chewing gum addiction?

i chew at least a pack of trident tropical twist everyday. sometimes i'll even 2 chew packs in a day. what i do is i chew a piece for a few minutes, then when it's not as sweet anymore, i spit it out and pop in a new piece. i know this must be horrible for my jaw. how can i stop this addiction? if i'm home, i'm always chewing gum after a meal. i don't know if it's an oral fixation or what.