Quitting smoking is the hardest resolution to keep? You don't say!
There are 1 billion smokers in the world, and trying to quit is always in the top 10 of New Year resolutions. But three out of 5 take it back up by the end of January. And by the end of the year, only 13% could actually make it stick.
It's why they say it's an addiction. It's also why Jim doesn't even bother trying to quit.