Confidence based decision making

I found this video where he talks about how all decisions we make are founded on confidence. He talks about how when in a near death situation, we think all about us, but once that situation is over we begin to think about everyone else around us. Why is that? He says that it all has to do with confidence. He goes on to talk about a lot of different situations where confidence gets in the way of decision making throughout the video. This connects to cognitive psychology because it is about decision making which is an important part of how our brain works.