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Toughness culture is Trauma culture. We don't shut down all our feelings unless something necessitates it. Sometimes that something is a family who has upheld toughness culture for so many generations it doesn't even know what the original trauma was that triggered it. The first step to healing generational trauma is acknowledging the pain and learning how to feel it. That's not weakness. It's badass courage.
Avoid focusing too much on fairness when teaching kids, as it can create a belief that good behavior is always rewarded and bad behavior is always punished, leading to the dangerous belief that they deserve any trauma they experience, instead use relational motivation to guide them towards making good choices.
The idea of toughening up your children to deal with the world only makes you their first bully, stripping them of their sense of belonging with you; treat your children with respect and connection so that they instinctively protect themselves from unkind and cruel treatment.
Learn why teasing your children for struggling can be emotionally abusive and detrimental to your relationship, and how to do better as a parent by owning up to your mistakes and treating your kids with the kindness and respect they deserve.