Failure modes... usually when I know an epic failure is inevitable, I give up on panic and step outside myself so I can view the situation objectively. If you're falling out of the sky with no parachute, then chances are you're toast and no amount of screaming "Ohmygodohmygodohmygod!" and flailing your arms is going to save you. No, if you're serious about survival, then you need to let go of your will to live. Look at it as a puzzle and take incremental steps.
"Oh, you know, if I spread my arms and legs I can take advantage of wind resistance and possibly guide my fall. Oh look, a deep body of water. I know if I hit still water at this speed it will be as hard as concrete, so I need something else to hit it first to break the surface up. I can take off a shoe and achieve that, or maybe just throw my cell phone."
Yes, this is an alien process, it flies in the face of the reality of the situation... but it's also possibly the one chance you have to fix things, and panic mode is only applicable when a tiger is trying to eat your face or something and you need to dump adrenaline quickly. Sadly, most hazards we know in the present day are not hazards that can be fought off with an adrenaline dump, the only thing that can save you is quick, clear thinking and moving unquestioningly in the moment.
"Oh, you know, if I spread my arms and legs I can take advantage of wind resistance and possibly guide my fall. Oh look, a deep body of water. I know if I hit still water at this speed it will be as hard as concrete, so I need something else to hit it first to break the surface up. I can take off a shoe and achieve that, or maybe just throw my cell phone."
Yes, this is an alien process, it flies in the face of the reality of the situation... but it's also possibly the one chance you have to fix things, and panic mode is only applicable when a tiger is trying to eat your face or something and you need to dump adrenaline quickly. Sadly, most hazards we know in the present day are not hazards that can be fought off with an adrenaline dump, the only thing that can save you is quick, clear thinking and moving unquestioningly in the moment.