2. Stop allowing people below age 18 un-regulated access to the Internet.
3. Stop prescribing amphetamines to children.
4. Stop letting single mothers raise children.
5. Stop raising low-income kids with high-income kids.
6. Stop making recognition a social priority (thymotic impulse).
7. Make the world smaller.
8. Stop letting your kids have unrealistic dreams.
I don't agree with most of these tenants.
Frankly, I don't think most of the above is possible, but if you want kids to be happier you need to stop exposing them to the chaotic, violent, and frankly depressing adult world before they fully develop their neocortex.
They're being forced to maladaptively virtualize neocortical function before the maturation of their physiological neocortex. The world seems a lot worse before your brain has developed enough to cope/deal with reality.
This is the truth, or at least part of it.