Rocket Mortgage wants to hear your approach to solving problems. They seek to measure your preferred working style and whether it meets their required criteria. They want to know how resourceful you are and whether you exhibit 'outside-of-the-box thinking. Meeting deadlines, overperforming, learning, and innovating is the aim of the messaging in your example.
Consider the skills and qualities that help you successfully face problems and provide confidence in dealing with them. Demonstrate that you are proactive, noticing issues before they become an issue. You want your answer to exhibit determination. Frame yourself as resourceful, with a propensity to think fast on your feet. Explain that you aren't easily discouraged.