Search in your language, in your mother-tongue, whatever country you are from, and practice to replace any such negation by positive words. That is powerful and may help all people around you. The greatest benefit however will be yours. If you grow up children or if you are a teacher or leader of any kind, show them what to learn by living the lessons you want to teach rather than teaching the lessons. Finally leave them the freedom to make their own choices.
Life is eternal and learning is a process that can only result by doing, by practicing.
Let children and adults make their own experiences. Explain all possible options of various decisions including the possible results, but leave them truly their own free choice. If they feel you mean it honest and really leave them the freedom of choice, then they may as well pick the wise solution among the many solutions you offered. If you understand by now the message, the importance of the magic of words, thoughts and imaginations, then you may find out where it all applies in your life and how to use it for the mutual benefit of all. Learn by practicing, think about your practices, improve in future repeats if there appears anything to be improved and apply what you have learned from practicing.