It's assumed parents will handle their kids' soccer practices, birthday parties, and meal times.
"We remind kids when their homework is due and when to do it — sometimes helping them do it, sometimes doing it for them," she said. "Thus, kids don't know how to prioritize tasks, manage workload, or meet deadlines, without regular reminders."
By age 18, however, Lythcott-Haims said these responsibilities must shift to the child. Knowing how to fit people into your schedule and manage their expectations based on your own plans is a crucial skill of adulthood.