David Goggins, man, this guy's fear is something most people don't even think about, you know? He's not scared of extreme physical challenges or pushing his mind and body to the absolute limit. No. His greatest fear is actually unfulfilled potential. He's terrified of leaving things on the table, of not giving it all. He imagined himself at the end of his life, standing in front of God or whatever you believe in, and being told he could have achieved far more than what he did. That's deep. It shows you why he's always pushing to get the most out of himself. He doesn't want to be that guy who just coasts through life, day in, day out, without ever really challenging himself. He wants to make sure he's squeezing every last drop out of his existence and he fears not doing so. It's a unique perspective, for sure.