Are you familiar with what the understanding is that differentiates/causes (very) sensitive vs (very) resilient kids, and whether and how that can be modulated

Are you familiar with what the understanding is that differentiates/causes (very) sensitive vs (very) resilient kids, and whether and how that can be modulated in children or even the effects of it overcome in adults? I believe this is and will continue to be a growing issue as things like helicopter parenting and extremely anxious social dynamics, which were only exacerbated through the psychological abuse of the pandemic, starts becoming ever more dominant in society. I myself am a bit taken aback sometimes when taking to younger people and people who grew up in America specifically, and their expressed disbelief and exacerbation about totally normal things like, e.g., children walking to and from school or playing outdoors unsupervised until dusk. I don’t know if there is a short term solution outside of individual or small group choice as long as our societies are being ravaged by a ruling class that is making everything worse and more dangerous by the day, but I find the topic both intriguing as well as sad and foreboding.