Emotions get in the way of making the right decisions way too often. I think it is pretty much essential to be at least aware in what emotional state you are before making decisions whenever you are in a survival situation.
So many people focus on all the gear and preps and forget the mental side of becoming more resilient. I think this is something that is cheap to train by simply being aware of how you react to problems and how you function under stress.
If you analyse this and understand yourself and when you tend to make the wrong decisions or what kind of decisions you tend to make in high pressure situations you have a big advantage compared to someone operating on autopilot.
Alea iacta est ("The die has been cast")