Currently conscientiousness is considered part of the big 5 which seem to be stable through your life. https://en.m.wikipedia.org/wiki/Big_Five_personality_trai

Currently conscientiousness is considered part of the big 5 which seem to be stable through your life. https://en.m.wikipedia.org/wiki/Big_Five_personality_traits https://en.m.wikipedia.org/wiki/Big_Five_personality_traits I couldn't find if it can be trained during bringing up of a kid.