This is mostly wishful thinking. Advantages tend to accumulate in life. Those who had the easiest time growing up are often the most stable ones emotionally. Life doesn’t care about fairness, just like being and tall and attractive is correlated with intelligence, even though we might not prefer it this way.
I’m sure you’ve also seen they type: brillant PhD, liked by everyone, natural leader, accomplished on multiple levels, perfect family and relations. These are the people that have been selected to be astronauts. How often have you seen one have a breakdown during a mission?