A bad habit never disappears miraculously, it's an undo-it-yourself project.
Never give a golfer an ultimatum unless you're prepared to lose.
True, a little learning is a dangerous thing, but it still beats total ignorance.
Fighting fire with fire only gets you ashes!
People who fight fire with fire usually end up with ashes.
If you want children to keep their feet on the ground, put some responsibility on their shoulders.