My sister’s first husband had a bit of an ego and was a hot-head. She once explained how she handled him. When she was confident that she was correct about some issue, she would gradually feed him reasoning/facts related to it. She would do it in as a low key manner as possible. It was almost as if by osmosis. Eventually he would come to the correct conclusion; with him thinking that it was all his idea. His ego was satisfied, which was perhaps the most important thing.
One might wonder why somebody should have to go through such when their position is strong and makes sense. I surely have wondered this my whole life. When people have really deep seated ideas, the ego is more often than not greatly involved. One needs to bypass it. About the only way to bypass it is with a gradual indirect approach. But then again, an assessment needs to be made as to whether the results will justify the effort.
Exit Question — Can a strong lefty ever be made to see the light?