I think I'm a pretty "prepared" person. I've thought about the more likely big and little emergencies for my own situation, tried to cover myself gearwise and trainining-wise (like first aid) and mentally rehearse some lists of things to do in given situations. However, through experiencing some "smaller" quickly unfolding emergencies over the past year, I have been disappointed with myself that in these actual situations, I tended to focus on the present moment and completely forgot about thinking about what the next step and the step after that might/should be. I suppose it's related to the "tunnel vision" effect when under extreme stress.
Any advice on training yourself to remain forward thinking when the adrenalin is pumping, particularly when the details of the situation don't fit any of your mentally rehearsed responses? There are an infinite number of possible situations when "thinking quickly on your feet" could be vital, but you couldn't possibly prepare for even a fraction of them ahead of time. That's why I'd like to improve my ability to think proactively, regardless of the details of the situation.