For children mastery entails struggle. This means they must be permitted to struggle. If parents inappropriately step in to "help"-out of impatience or solicitude-they sabotage important learning. Among other things, the child is unlikely to discover the advantages of perseverance and self-discipline.
Nathaniel Brandens Self-Esteem Every Day: Reflections on Self-Esteem and Spirituality (ed. Simon and Schuster, 1998) - ISBN: 9780684833385