What is the first and most critical step when performing a self rescue?

The first and most critical step when performing a self-rescue involves attaching the snaphook to an appropriate anchor point. This action is foundational because it secures the individual to a stable point, allowing them to safely manage their descent or transition to a safer position. Establishing this connection ensures that the person is not free-falling or at risk of further injury while they prepare to execute the necessary steps for self-rescue.

By securing themselves properly, they can effectively utilize the equipment and techniques available to them without compromising their safety. This step lays the groundwork for subsequent actions, ensuring that the individual has a reliable support point throughout the rescue process.