Changing the seemingly unchangeable is very difficult. In my previous life I was in manufacturing. I managed a maintenance team. One of our members was "old school". He kept up with code requirements, but new techniques and skills were rejected. We talked daily about the need to embrace the new, and to not be afraid of change. Once I got him to perform just one task using a recommended new technique, he was good to go. Not only did it work, but it made his job easier.
