I watched a video made by a former marine who talks about survival and SHTF scenarios. He said that during a work project he met a young man, a former special forces guy, and one day they chatted about his story. The marine said that he asked the special forces guy his advice on prepping and bug-out scenarios for a single person vs a family and all of that. The marine said that after listening for a long while, the special forces guy said "i'll give you the best advice I know. This is how I survived all of my dangerous missions." He looked the marine in the eyes and said, "All of your plans won't work. You and your family are already dead." The marine backed up and said, "What?" He was not expecting such pessimism. The special forces guy repeated, "You are going to die. You and your family are not going to survive. Make peace with this idea and you might make it through the chaos. If you're constantly worried about dying, you won't make the right choices, the bold choices, that survival requires."
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The marine ended his video by saying it's the best survival advice he's ever gotten.