I hope it hasn’t caused any long term problems. My First Grade teacher tried to force me to use my right hand. My parents discovered this when I came home with papers with almost all the hand-writing done backwards. She was a very old woman, near retirement, she had taught both of my parents when they had been in school. They were able to get her to stop trying to change me and other than one or two stressful years along the way I did well in school. On a side note, I heard once from somewhere that people that are left-handed are a surviving twin. The other twin died early in the pregnancy and was absorbed by the mother’s system. I have absolutely no source for this and have never done any research on it but it is interesting to think about.