Agree.
Didn't work for him because he didn't want it to work - he enjoys that particular sin - it is now a choice.
Like a heroin addict that stays clean for five years, then makes a choice to buy a bag and get high. Does he have to? No, but he wants to.
Theodore Dalrymple in a recent article wrote that heroin addicts tell him that they “would quit if they could.” He said, by that they mean that if there was a pill they could take that would remove the desire for heroin, with no effort of will or change of lifestyle, they would take it.
However, he said, he doesn’t believe they would. They started using heroin, and continued it to the point of physical addiction, because they enjoyed it. They wouldn’t quit even if it were easy.