Its endless, and it starts from childhood.
If someone comes from a family that values higher education, the parents will begin grooming their kids and steering them towards that goal from an early age in the form of tutors, encouragement, discipline - 99% of JW kids miss out on that.
Important milestones that every kid gets to celebrate are ignored by jw parents. Also, normal relationships are difficult with non-believers at school, I was nervous to bring kids home to meet the family. Too much involvement with sport was frowned on, including the relationships that comes from those. Any errors that normal kids made- like experimenting with sex, are punishable by shunning, if you are baptised, or at the very least, private reproof and shaming in front of your family members.
Then there are the years lost in adapting to ever changing doctrine.