Overcoming challenges to achieve success involves being able to spontaneously come up with effective strategies to address different task demands. Research has linked individual differences in such strategy generation and use to optimal development over time and greater success across many areas of life. Yet, there is surprisingly little experimental evidence that tests how we might help young children to spontaneously generate and apply effective strategies across different challenging tasks. We test this in an area important to development: delaying gratification. To do this, we developed a "strategic mindset" storybook that encouraged children, when waiting felt hard, to ask themselves strategy-eliciting questions, such as: "What can I try to be better at this?" In two experiments (