Good Inside rejects happiness as the main goal and instead treats resilience as the greater gift. Children become sturdier not when adults remove all distress, but when adults help them survive distress without losing themselves.
That means tolerating frustration, disappointment, and thwarted desire long enough to learn that they can be borne. Avoidance may buy peace for a moment, but it weakens the muscles needed later.
This is one of the book’s strongest cross-domain claims. Maturity in faith, work, relationships, and parenting all require the capacity to remain present in difficulty.