(Excerpt from Thinking In Bets by Annie Duke)
self-serving bias arises from our drive to create a positive self-narrative. In that narrative, taking credit for something good is the same as saying we made the right decision. And being right feels good. Likewise, thinking that something bad was our fault means we made a wrong decision, and being wrong feels bad. When our self-image is at stake, we treat our fielding decisions as 100% or 0%: right versus wrong, skill versus luck, our responsibility versus outside our control. There are no shades of grey.