As a parent myself, I wish the scenario you described was true! That guardians had the capacity to simply nurture into reality an Al Einstein or Mikey Phelps, if they just Tiger Mom push their way through the young person's early years. But the data do not indicate that; to the contrary, most of that future person is already defined in their nature/genes at conception, and good parenting, at its best, will simply avoid catastrophe while nudging towards good goals.
All the rest is just to make the guardian feel better about themself.
[1] https://www.science.org/doi/10.1126/science.2218526 [2] https://en.wikipedia.org/wiki/Replication_crisis