The first thing to do if you get lost and need shelter is to look for a natural shelter. This could be a cave, rock overhang, or any existing structure that can provide immediate protection from the elements with minimal effort. If no natural shelter is available, then you can focus on building a shelter using materials nearby, such as a lean-to or debris hut, but finding natural shelter takes priority because it offers quick refuge.

Before acting, it is also important to stay calm, stop, and think clearly about your situation. Calmness helps you make better decisions and conserve energy while planning your next steps.

In summary, prioritize finding a natural shelter first to protect yourself, then build or improve it if needed, while maintaining a calm state of mind.