Years ago, in Maine, I noticed something.
Many small family dairy farms were closing down, since it had become impossible to make a living milking ten cows. Forty or so became a reasonable minimum.
The older kids in many families had grown up doing farm chores daily: regularly accepting and exercising personal responsibility in a concrete way. The younger children, once the farm shut down, didn't grow up with this opportunity.
The older kids tended to be more confident, resourceful and independent than were their younger never-had-farmed siblings.
I've noticed the same kind of difference in children who grow up around boats, and are permitted to assume responsibilities on board. I think it makes a big difference. Anyone else???