Inferred you are referring to "The Martian".
Answer:
Sometimes it's good to get lost--you may learn a great deal before you're found.
Explanation:
Remember, the scene began with the fact that an astronaut and Botanist Watney who was thought to be dead is left behind in Mars by his team after they experience a "dust storm"; rendering him lost so to speak.
However, in this present circumstances, the astronaut learns a great deal by been lost in planet Mars, evident from the fact that he was able to learn how using his faeces and the leftovers from his meals to use as manure that allowed him to cultivate fresh potatoes as food.
Further, he was able to learn how to generate water by using an oxygenator to convert carbon dioxide from the space shuttle fuel plant into oxygen, which eventually produced water for his crops.