I have found for many young kids lack of studiousness is not that they are not self-motivated. It is that whatever is being taught is worse than boring to them. The lack of motivation in schools comes from a lack of interest or too slow of pacing.
By the time they get out of primary school most have had the curiosity that drives motivation beat out of them.
By the time they get out of primary school most have had the curiosity that drives motivation beat out of them.