“We must give up many things to which we are addicted, considering them to be good. Otherwise, courage will vanish, which should continually test itself. Greatness of soul will be lost, which can’t stand out unless it disdains as petty what the mob regards as most desirable.
Seneca, Moral Letters, 74.12b-13
I think most people agree addictions are unhealthy even when those addictions are to things that are good. The continued and consistent monitoring and culling of addictions is kind of an ongoing battle with your own brain chemicals.